I've just snapped up a boxed EH-2, I already have one (unboxed), and I love what it does to my sound for recording, whatever other effects I'm using. But I find it does it's thing best when it's last in the chain - so I decided to get a second one so I can use two after a stereo effect.
Not with a EH-2 but i did try for a while using my two DD-3's off the stereo outs on my CH-1 going to my two amps..i got the idea from an early pedal setup of The Edge from U2 when he was using a couple of old EH memoryman echo pedals and a couple of Vox AC30's..but turning them on and off in the middle of a gig was a bit hard... great sound though with the delays set one long,and one short....if you were planing leaving the EH-2's on all the time in wouldn't be so much of a problem.....