I stopped by Minneapolis's Midwestern Mountaineering yesterday and was excited to find a handful bunch of Rab eVent shells 40% off in my size, XXL. IIRC they had the Momentum, Drillium, and Latok Alpine in my size, those and others in L, including the Demand Pullover. Lots of stuff in L.
I would've gone for it if it weren't for the fit, which made it a the three shells I tried on a no go. I fit in an XXL in everything else I've tried on- Marmot, Patagonia, First Ascent, Arc'teryx, Mountain Hardwear, North Face, etc. There is a variation between makes and models, but usually it's in how much room there is in the gut. Makes perfect sense to me- the more athletic the fit, the more an XL or XXL is for a large guy rather than a fat guy.
The Rab XXL was sort of the opposite for me. Very tight in the shoulders, arms were pretty constrained all the way to the wrist cuffs, average fit over my pecs, and enough room in my gut. When I tried to visualize who this would fit, I couldn't help think of a lanky Scot who used to climb with a naturally skinny and narrow shouldered but with a burgeoning beer gut from years spent in the pub and off the trail.
I was surprised how tight the arms were past the shoulders- very little room for insulation, even in the forearm. My arms are somewhat muscular, but they're not *that* developed.
OK, there's no real point in my posting this. Quality seemed great otherwise, just felt like doing some post Turkey Day venting...