I see a dedicated mount as one less thing to go wrong.  Of course if the mount itself has an issue, 1.375 makes it replaceable, but that's assuming the incidence of mount issues is higher than the incidence of 1.375 loosening, which I'm not sure is the case.  I don't have a lot of time running cans on the 1.375 mount to know if it's never going to loosen during use.  The built in mounts typically can't loosen.  Ours are all literally machined in, so there is no way to loosen our built in mounts.

I haven’t ever had a recce 5 come loose while firing.  If you semi-permanently installed one, it might be very difficult to remove after a lot of shooting on many different days. Typically I remove cans after shooting and lubricate the taper mount suppressor ID threads and taper with lock cease 20/20.  

We are showing the Dual Lok 5.56 suppressor at NRA in like a week.  Thats 11.8 ounces and has a splined locking mount.  It would kind of seem pointless to use it to not remove the silencer from the mount though, as mounts like that are a bit heavier for the complexity of locking devices intended to be used periodically.

The 1.375 Explorr can be used with a dual lok mount and that weighs like 12.3 ounces if the 1.375 is preferred.  

I didn't say the can is more likely to be stuck.  I simply talked about simple routine maintenance.

There is no can that can be mounted long term (through many range sessions) and not have some carbon binding possibility.  Carbon binding is not permanent, but it does make it tougher to remove the can.  The can is a high pressure and high temperature environment with a vapor deposition of copper and lead, which are soldering elements.  A person could lie to you, but it's not going to change that reality that the atmosphere and conditions won't be changing with the mounting system design.  I ran an M4-2000 for ~5 days of military testing once for the Army something like 200 rounds a day, and I removed the can daily but didn't clean the mount and I got it stuck- copper brazed the mount to the suppressor during maybe the third 200 round session. The copper built on the inside rear of the suppressor and deposition built down to the muzzle device and they fused together.   That was on a 10" 5.56 SCAR. These things don't happen very often but they can happen which is why a little maintenance is important in mitigating issues.  I haven't locked a taper mount, but then I haven't left one mounted for 5 or 6 range trips either, so I haven't tried intentionally to lock one.  I have fired them hundreds of rounds on machine guns many times without locking one.

There are also reasons to remove a can after a range session, like condensation which can occur, which can increase the risk of bore corrosion, or the desire to punch cleaning patches without risk of losing them inside the baffling of the suppressor.  Cleaning and lubricating the mount of any suppressor system would require removing the suppressor.  The corrosion can be mitigated with a shot of aerosol lubricant, so there are some work arounds, but those are realities of working with suppressor systems.

An A2 compensator is a good example.  If you try to pull one off a rifle that has fired thousands of rounds, sometimes it requires a lot of torque, and maybe some torch heat to pull the comp off the barrel.  Sometimes it pops free with a snapping sound at a high level of torque.  That's a carbon lock on a muzzle device that isn't even in a suppressor.

Dual Lok interfaces in 1.375 are available to fit the Explorr 1.375 Utility mount version, and the interface will be available built in to a suppressor of a new model we're planning to show at NRA next week.

It was designed for show me customers, and for contracts that might ask for a redundant locking system.  We add that to the gate lok system in our lines, but I think it has a place for certain customers.  I'm happy with the Dual Lok suppressors, they kind of push the envelope for performance in that category of locking mount product.