Here’s a normal T3x Lite stainless in a Sendero inlet.
When navigating thru deep, thick shitty alder/willow/devils club forest earlier this year with this same stock on a Superlite barrel (same barrel od, just fluted) the channel did get some stuff in it because sticks/twigs/branches would ride the barrel down to where the end of stock is, and as I pushed thru brush some of the branch’s leafs, twigs, fuzz balls, bark would get stripped off as it slid along that pinch point at end of stock. Some of that material fell in the barrel channel under the barrel and had to be cleaned out.
Important factors though: I’m tall and I was carrying the rifle strapped to my pack (sticking up high) and just pushing half blindly through thick coastal Alaskan brush for several hours (could have carried it about 3 different ways just fine).
Also, I feel like the bigger the channel the easier it is to clean out without taking the stock off. Poke/jiggle a piece of paracord under the barrel as far back towards the receiver as you can and then with other hand slide it up and down the barrel so everything falls out. But that’s just me. Probably less crap in there if the barrel gap was smaller, but I wouldn’t call it snaggy, and I may not have even known stuff was packed in there with a smaller barrel gap tbh, which could be a different POI issue later
P.S. -Any body else notice how much auto correct sucks these days? I type ‘other hand’ and phone corrects to ‘bother hands’… shit like that. Have to write many things twice