You might want to look into the Garmin Rino 520HCx and 530HCx. They combine a GPS and a GMRS/FRS radio into one unit. I've had good luck with them and it helps to cut down on the gear I carry.

For me, it also makes a lot of sense to have them combined, as they're probably my two most used electronic devices while out on the sticks, other than maybe my flashlight.

I'm not a HAM, but my typical outdoor electronics gear includes a cell phone, GPS, GMRS/FRS two-ways, and an AM/FM/Shortwave radio....so it's somewhat comparable. Except, with the Rino, it ends up only be three devices instead of four. (Other than when I'm in the car, where I've got a CB.)

Edit: I don't have a PLB, but it is on my list of things to get eventually. With that said, I'm kind of waiting for them to get even smaller. They're getting there, but I want one that's roughly the size of my cell phone...so I can attach it to my belt and always have it with me.