I'm as big a fan of the .22 WMR as anybody, but why would you intentionally go for a range of 25 to 50 yards with a small caliber handgun against bobcat and fox when you say you'll be carrying a rifle you consider suitable for coyotes?
Not to question anybody's ability to put rounds on target at any given range/condition, but a humane shot from a handgun at 75 to 150 feet involves hitting a mighty small target, especially in smaller critters.
And I'm speaking as a guy who has put plenty of squirrel away using, among other things, my .22 WMR AMT Automag II with 6 inch barrel.
Out of my Automag, I wouldn't have a problem taking small game at any range I truly felt I could make a clean head shot at.
A revolver would have a bit less muzzle velocity than my Automag, but you're still looking at about .22 LR performance at a respectable distance.
If I were hunting with a rifle, I wouldn't waste my time with a .22 WMR pistol on predators like those.
You certainly ain't saving anything in the noise department, that's for sure!