Great input gents.
Uncletele: Regarding your comment: "Be willing to adjust to the other player's short-comings," I need to admit that no amount of adjustment could have covered the other guy's short-comings on Sunday. He played out of tune (even when the guitar was pretty much in tune--string bending while chording?) and either had distortion or chorus on most of the time.
Most every musician at our church is a delight to play with as they are excellent musicians and fun to work with. It left me with a couple of thoughts after a rather frustrating worship experience:
1.) Not everyone who picks up a guitar is necessarily a musician or has a sense of musicality and seeks to perfect his craft.
2.) Regarding church worship teams, it is also about relationships and more about lifting the Lord up than playing with professionalism. But still....
I practice my worship sets for hours even before showing up for group practice, but not everyone takes it that seriously. We play to thousands of worshippers on our assigned weekends with 5 services, so professionalism is important, but not THE thing, necessarily.