I ended up removing the triglide after trying this setup for a while and will be trying an MS3. The main issue for me was when using the sling in two-point mode (which I use 99% of the time) the triglide rode over the stock right where my cheek was supposed to be (I run a Noveske QD endplate and a SPOMOD, so this may work out totally different for you depending on your layout). No matter how I tried to position the triglide it would come up and interfere with my cheek-weld. When I ran it as close to the end-plate as I could, it would interfere with my grip, banging or scraping the top of my knuckles. Again, probably a non-issue for others who run a different setup.
The other thing is that there was no "gross motor" muscle behavior going on to plug a QD socket into the triglide, it's a tad finicky to get it in there. It didn't make sense to me, my thought being; if I want to transition to a single point configuration, I'd probably want to do that quickly (and possibly under stress). While I hate to give up my Vickers sling, the MS3 really does seem better suited to being "converted", which is a feature I'd still like to have.