Dustin Short wrote a review of Rab Alliance Glove on October 12, 2014
Familiarity: I've used it once or twice and have initial impressions
I've heard good things about Rab gloves but they have an odd fit. Many say they fit small and they definitely do. I'm usually borderline medium or large in gloves (with a preference for medium in liners and large for outers to allow layering). My hand measures 8" across which puts me at the bottom end of Medium for rab gloves. With all this, sounded like a large would fit well in this glove.
It does, sorta. The primaloft liner in large is perfect and the outer in larger is a great glove with just enough room for layering a fleece or powerstretch glove under. There lies the problem, the inner and outer together, with a medium sizing up for large, is too tight of a fit. The fit is passable but I feel like my bare hand is compressed. Ideally my hand should only feel tight if I was wearing a thin powerstretch liner after sizing up.
My intended use was for trekking and not technical winter climbing. Sizing up I would call it a "technical" fit. Sizing up two sizes would be better for warmth and general use. I've not gotten to use it in cold yet but some reviews call it a fair single digit (F) glove. With the small sizing, I'm expecting to lose some of that warmth due to constricted blood flow. I got a good deal so will keep the gloves and probably use them separately, but if buying definitely size up one or two sizes from what the sizing chart provides.
The right glove also has a weird pinkie finger. I can only put it on if I extend my pinkie up (think pinkie out when drinking from a tea cup). Doing this is very easy and effective but odd still. The left glove liner slides on fine no matter what, it's just a poor QA thing with the right.
Individually I would rate the liners and the shell each higher, but as a set the sizing is not optimized. I'll update later in the season to see if they loosen up with usage.