I took a trip down to WV a couple of weeks ago to see the All Good Music Festival. Here's some pics I took of some of the bass players and their gear.
Here's some pics I got of Oteil and the Pacemakers:
His rig:

Oteil was one of my favorite. He kicked off the four day event early on Friday and there were not many people there watching him (shame). I got to get up really close. He was pretty amazing.
Here's a shot of Claypool's rig. Holy Ampeg! Do I see 4 heads?
Umphrey's McGee - Ryan Stasik: Lakland bass, GK head, Ampeg Cab
Robert Randolf and the Family Band - Danyel Morgan: Modulus Quantum 6, 2 Mesa Big Block heads, 2 Mesa 4x10 cabs
SOJA (soldiers of jah army) - Bob Jefferson: Stingray 5, Ampeg head, Ampeg Cab
Tea Leaf Green - Ben C.: Marcus Miller sig. Fender Jazz, GK head, SWR 410 cab
Galactic - Robert Mercurio: Fender P, Ampeg head and cab
This was the Side Stage house rig that many bass players used throughout the weekend (Ampeg Head and SWR 410's)
Enjoy!