If used online, skins crash your game (only tried cow) - anyway main thing i wanted to share. if you use 'all weapons' online it does work, but theres plenty of weapons we should not have - e.g railgun, guns over our level, fire exst,
So be carefull as i found no way to reverse it, dropping them is only a temp fix they return
EDITED - All guns you dont own removed during reload of game or session change