I just got my first Victorinox as an adult, a one-hand Trekker/Classic SD combo. The Classic went right on my keyring, and unusually for me it didn't come off an hour later.
The Trekker is awesome, but I think I should have gone for a regular Trekker, since I love the woodsaw and the fingerhole hump just feels hazardous to me. It also made me want a trimmer, lighter SAK, so I ordered a Cadet and Electrician, both Alox. They rock, when I have one of my SAKs on me they usually find plenty of opportunity to get out and help with small tasks. The Cadet is like having nothing in your pocket, which is what I was hoping for, and the Electrician is sweet, love the inline 93mm reamer.