That's a good point that may be lost on many!You can get away with putting bicycle air in your motorcycle tires, but I don't recommend it. I did this once before going out for a couple hours' ride on the weekend, and upon returning home and jumping off the bike, found that my riding gear had turned into a too-tightly-fitting spandex onesie with guady high-vis designs and sponsor logos all over it. All in all, it's a questionable (and potentially visually unappealing) type of "darkside" tire maintenance alternative.
Maybe just do this to get home in an emergency or if you want to pick and choose which traffic laws apply to you or not.
This is a great pump. Mine is going on ten years old. I use it to keep all my bikes topped up and I bring it on the road if I'm trailering the bike behind my rv.Look for a bike pump that pumps on both the down and up strokes, as it pushes a lot more volume than others. Anything geared towards mountain bikes will do that.
I'd recommend the Topeak Joe Blow Floor pump. About $40 on Amazon.....maybe about $50 in a bike shop.