I love the drain provisions in the Sullivan sheaths, just check them for clogging and unclog with a paperclip or something if you get nasty.....i often wore my knives inverted on suspender strap as much to let sheaths drain as any other reason, once had an extended stay in a river delta area where we were in waist deep water or deeper where we had to sleep/nap standing up and would hook suspender strap to a cut off branch to hold us up...a SHARP 1/4" hollow punch, or drill bit (pilot drill with smaller bit for starters) can do a neat job if you make sure sheath doesn't move and you have a firm wood surface backing the sheath you can punch or drill into, and normally the far side will be neatest so keep that in mind on which side pretty means the most....i really like that #1 of Jimmy's, worth more than any 10 new ones in a safe....and Burnie's....