Having had to contend with slippery-when-wet crosswalk paint, trolley car tracks, and wide, metal bridge spans and having wiped out a couple of times, I needed gloves with knuckle protection.
My mountain bike gloves with thick padding on the back of the fingers and hands are threadbare. I could not pull on or off XL Oakley gloves because the openings were too small. Most important, the gloves knuckle protection, made up of rubber rings, seemed only to be cosmetic.
My hand fits XL North Face, EMS, etc. winter gloves with some space for warm air circulation. Mountain Bike gloves, however, should be snugger for most riders to operate shifters, brake levers, and bells.
Fox XLRacing Bomber Gloves are easy to pull on and off and made even easier thanks to the velcro strap on the back of the cuff. The knuckle protection is actually some type of hard plastic integrated into the glove material.
The cosmetics are more subtle than the Oakleys, especially with the brand name, but make the glove look pretty sharp. To be nit-picky, they should have added some color to the knuck plastic so you can seem.
These gloves feel secure on the grips and allow you to move your fingers easily. They are also snug enough at the finger tips to depress, with a bit of effort, rubber buttons on your lights, convenient as the temps drop.
I have used these gloves already in temperatures as low as 34F (plus "bike wind chill") and they provide enough of a wind block to keep my hands comfortable.
Having had two new gloves and an older pair to compare, I can confidently say that Fox beats Oakley for function, comfort, cosmetics, and design. Both gloves are snug and the material fairly thin. The knuckle protection on the Fox glove is serious, but hopefully, I will never have to find out on the bike or at a bar to prove my testosterone level is high. In fact, I may order another pair as the snows will come soon.