well it puts a hurtin on your shift forks. power shifting slips your clutch, but the clutch is meant to slip so its not big deal to not grab the clutch when you shift if your just cruising slow. but if you holding it wide open adn go for a power shift, your putting a hurting on the shift forks bigtime. i dont ever power shift but ill be lazy and not grab the clutch now and then, no big deal.