link
I need something that will work with a tucked dress shirt.  

Kinda wondering if the G36 model holster would work for my G30S.  Looks like the slide width being only 4mm thicker might not be the only difference, making it a bit tight.

Glock website - compare G36 vs G30S

Thoughts?

After digging around a bit, seems some report the G19 model for the Tuck and Go is a better fit?

I use a version of the Galco called USA for a Glock 27, same dsign but no metal around the top to keep the holster open after drawing.  My Daughter  uses a Tuck N Go for her Glock 36 which she got from me.  I think this is the most concealable designed IWB holster on the market.  I have used this design since 1999 and have been very pleaed with the holster durability and comfort.

Another good holster of this design but a little cheeper is the DeSantis Sof-Tuck.  This holster will fit more than one pistol but compared to the Galco which is more molded for a particular model and is more expensive.  I'm using a Sof-Tuck for my Glock 42.

http://www.midwayusa.com/product/541754/desantis-sof-tuck-inside-the-waistband-holster-right-hand-glock-19-23-32-sig-sauer-239-leather-brown?cm_vc=ProductFinding

Listening, as I've got a 30S myself. Lemme know what you find out.

Well after some deliberation on this, watching reviews etc, I think the next holster I get will be one of these
Remora tuckable holster - "clipless"
youtube review from tnoutdoors

I already have one of these Uncle Mikes pocket holster - works well for IWB (no clips) carry also

The 30S will drop in the same holster you would use for a G19.

I have no experience with the holster you linked but I do own a G19 and a G30S

Update.  Hosters for some guys are kinda like shoes for women - you can end up with a pile of them.
Here is another option similar to the Remora holsters