Looks good. They appear to be quite bulky for liners, do they need extra heavy outer gloves?
They are fairly bulky in general, and have *very* bulky cuffs, where the batteries are kept. You may find you can't get them inside a cycling waterproof sleeve. Lots of people seem to complain about being able to operate gears or brakes with bulky gloves, but I've never had a problem.
You need windproof outers, ideally waterproof, and the more insulation in the outers, the more effective the heating.
I use them with full on crab claw outers (planet X) when subzero; but they're still very effective with normal fingered outers which I use when it's cold but not freezing. They are remarkably effective - a 20 minute descent of the Cat and Fiddle in the snow was fine on medium setting.
Ideally, you'd have the outers a size larger than your normal gloves, but I've got very big hands, so can't do that.
I've been using them for about 5 years and the elements don't last forever - two winters of commuting use is a reasonable expectation IME. I'd guess they'd last much longer if just used for weekend rides and the like.