Funny, for the longest time I do the exact same thing and never really noticed until you explained it P@. Not sure if its good or bad, but I've never had a problem
Actually, clutchless shifting, done right, puts less wear on everything.
I tend to only clutchless shift upshifting on spirited rides. This is required because letting off the throttle (about 25%) unloads the gears and you get a perfect sync.