#1
http://www.musiciansfriend.com/product/Boss-TU2-Chromatic-Stompbox-Tuner?sku=213012

Can I use that with my acoustic? I need a chromatic tuner, and I've found that tuning is more accurate if I actually plug my tuner into my pickup, especially since when I tune at church the other musicians are warming up and it's loud so the microphone doesn't work well, but I look like a dork because I have to unplug my wire out of my D.I. box, plug it into my tuner, hang my tuner on a music stand, hope it doesn't fall off, then unplug it and plug back into the D.I. box. Plus the mute functionality would be cool because sometimes I need to go into the back room to practice with the choir, but the PA system is still on, and it pops real loud when I unplug. I'm thinking a pedal would be tons easier and more professional, but I've never heard of an acoustic person using a pedal.

Should I just get one of those clip-on tuners that goes on your headstock and senses body vibrations instead?
#3
I've never used one, but I would be wary of clip on tuners if you are in a loud environment, because it picks up vibrations from your neck, and external noises might cause your neck to vibrate also. If your acoustic can hook up to it, then I would go with the pedal.
#4
I have heard great things about that tuner. It seems that a lot of people use them. Pretty much anything by Boss is a good product.
Gear:
Gibson Les Paul Custom (bright yellow finish)
Epiphone Les Paul Standard
Marshall MG100HDFX half stack
Crate XT15R
Fender Rumble 60
Pod X3 Live
Boss NS-1 Noisegate
#5
The pedals are awesome. Pretty much anyone who performs live often will have one, even those people who play acoustics.

As long as your cool with spending $80 more than the trusty Korg CA-30, then I saw go for it.

Gear:
Partscaster/Tele into a bunch of pedals, a Maz 18 head, and a Z Best cab.
#7
I have it and it works great with my acoustic. If you don't mind the price go for it.
Bass Player
#8
I prefer one with a needle as it's more accurate. A set of LED's isn't as accurate. Most basic tuners have an input so you can tune with sound or by the pickup.
#9
Great tuner. My guitar teacher at my church used to use one (or at least something very much like it), and he had an acoustic-electric. It looked a ton like it, the color, LED's, letter display, everything, except that someone wrote the church's initials on there I think... I think it was FCC Lol.
Gear:
Schecter Hellraiser Deluxe
Boss DS-1
Crate GTD65

GAS List:
Mesa Boogie Dual Rectifier Roadster