I condition my leathers once a year. If the bugs come off then good for the bugs. Otherwise they get washed in the rain/fog or just form another layer of protection. Same for my helmet. The visor is cleaned when necessary, but otherwise there are 10's of thousands of miles worth of bugs obscuring my white Arai forehead sticker.
NO! ..the protien from thier juices is actually a natural leather conditioner, never, never clean them off, after a while, you will also achive a total waterproof coating. You cant buy this kind of stuff in stores......really.
On a related note: though I clean nothing that I wear, I've gotten pretty anal about cleaning my fork tubes after nearly every ride. I think dried bugs really wreck fork seals (mine have been replaced twice at exact 17K intervals so far)
The only time my gear gets cleaned is when I need to put some polish on my old Alpinestar Highpoints, or cleaning the visor so I can see. I find that riding at high speeds in the rain works best to get dead bugs off, sort of pressure washing type effect.
Don't tell this to the vegetarian guy who wanted non leather gloves. He may quit riding b/c he is killing something in the process. LOL jk. I wet a towel and wipe my jacket down every now and then, when it gets bad and noticeable from afar.
Never! It's how I gauge the age of my gear. When I can no longer see cowhide or color, or there's a crowd of 20 or more buzzards circling over the scent trail I leave me whenever I ride, time for new jacket. ;D
Also good for emergency rationss when stranded in desert. MRE on the cuff.