I've worked in the trades for 16 years, and all I've ever used is a Stanley utility knife. In fact, I can't recall ever seeing anyone using anything other than a Stanley knife. The first time you run over a nail-head when cutting tyvek, or drop your knife onto a pile of gravel-filled backfill - you will never want to carry anything other than a disposable knife again. On any job-site, especially carpentry - your blade edge will come in contact with metal, grit, stone, etc. almost every time you use it. Save the pocket knife for opening your bag of Doritos at lunch.
ETA - Cutting the tip off of a tube of deck adhesive is one of those things where no matter hard you try - you will inevitably get glue all over your knife blade. One of the many reasons disposable blades were invented.