Being that most hunting is done in the winter, I would think you would need a larger exit pupil than 3.2mm, but the 10x32 FL seems to do the job, according to this hunting reviewer.
http://findarticles.com/p/articles/mi_m0BQY/is_10_52/ai_n26970132/
Not sure if the 10x32 HD measures up. FLs are supposed to be the brightest. The FL also has more eye relief (15.2mm vs. 13.2mm for the Leica, which is probably not enough for eyeglass wearers even if they have a flat face and thin glasses).
ER is one area where Leica lags behind the pack.
The Nikon 10x32 EDG has the best ER at 17.3mm. Right now, at least in the US, it also costs half as much as the "alphas" (Leica, Swarovski, and Zeiss) but delivers comparable performance.
The 8x20 "ultravoid" only has a 2.5mm exit pupil, which would be dim in the winter. An 8x32 bin would probably be the best compromise btwn weight and exit pupil. Unfortunately, the 8x32 Ultavid doesn't have enough ER for most eyeglass wearers - same as the 10x32 model.
Here the 8x32 EDG does best again with 18.5mm ER. Unless you look like my Uncle Tonoose (see avatar) or have Coke bottle glasses, that should be plenty ER for eyeglass wearers.
Keep in mind that optics companies' ER figures don't always equal the usable ER for eyeglass wearers and are most often less, but Nikon is one of the best in giving usable ER figures.
The EDG's open bridge is also easier to handle for people with larger hands like myself.
You might also check out the Swarovski 8x30 SLCNew. My friend Steve uses it for hunting and he wears glasses. It has 15mm ER, but he has flat facial features unlike me and my Uncle Tonoose.
While Leica might be your camera of choice, it might not be the best choice for you as a hunting binocular, because of the low ER.
Brock