flipe8, you can disengage the lock without the outside button,BUT, it is a totally different mechanism...
one thing that I wanted to state is when I designed this knife, I realized that if you asked 20 different emergency personel what gear they think is the most important,you will get 20 different answers!

...I wear mechanics glooves on mva's as well,I also carry shears( the excellent Gerber shears!

)...what I had in mind when I designed this tool was for when Murphy shows up! and if you've been running long enough you know that Murphy has a nasty habit of showing up!...if you can open AND close this knife easy enough with heavy turnout glooves on then when you do it with mechanics gloves on its REAL easy...when you loose your shears (or loaned them to someone on the last call

)..you have a backup in the seatbelt cutter, and know that you will not run into the chance of cutting the PT. There is alot of differnt instances that I could relate but, I'm sure you guys will be able to come up with your own...
Speaking of Murphy, I just had one about a month ago with a PT. who got into 270 volts of electric...sent him into full arrest (he weighed about 270lbs)...we worked him on the way to the er,and as we pulled ito the hospital I went to change his O2 tubing back to the bottle from the squad O2,we package pt's with the O2 bottle between their legs and wouldnt ya know Murphy put the damn O2 wrench way under the guys ass, I couldnt pull it out so I just reached into my pocket, pulled out my knife and used the O2 wrench slot to open the bottle..no delay....(I let the nurse get to O2 wrench :barf: )....
Rick Hinderer