Switch from 9mm to .40 - your thoughts, please..

[Bubbajms]

Okay, here's my situation..

The first handgun I ever bought myself was a Glock 17, in 9mm. At the time I was doing Search and Rescue with the local Sheriff's Department, and they required everyone that worked with them to be armed. They didn't have any rules on what you carried as long as you could put 6 rounds on target with whatever you had, but the actual deputies were issued Glocks in 9mm, so I figured that I would equip myself in the same fashion.

Shortly after picking up the 17, I got myself a 26, as a backup to the 17 and so I could carry something a little smaller if I needed to.

Fast forward to today, several years later and many miles west. I'm starting to venture into the same situation with my local Sheriff's office and they have one rule - you can carry whatever you want, as long as it's a Glock, and as long as it's a .40.

Here's where I'm torn..

How should I go about this?? I did some plinking with a Glock 35 and think that it would do nicely for the full-size sidearm they require. Problem is this, though - I can't afford to go buy a Glock on the drop of a hat, and I need to pick something up before I can really start training or working with these guys. On top of that, if I'm going to be carrying a .40 with them, I think it would be a wise decision to carry a .40 Glock for my personal carry handgun as well. This is where I'm starting to need help.

Right now, I've got a Glock 17 and a Glock 26.

I'm looking to get a Glock 35, and then possibly getting another smaller Glock (23? 27?) as a personal carry handgun.

What are your thoughts on this? Should I transition from 9mm to .40 for everything? Run the .40 when I'm "working", then switch back to my 9mm when I'm not?

Put yourself in my situation and tell me what you'd do..