Anyone Have Spey Rod Experience?

[JobyKSU]

So, for my birthday I'm getting some rod-building materials. Since I've got a decent variety of singe handers (although a nice 2 or 3 wt might be fun at Beaver) I decided to go with a two-handed rod.

After doing some research, I called Bob Meiser's company, and ended up talking to the man himself. Huge help! I think I've decided on his new 3/4/5 weight 12'6" series. It should be able to throw the quad-tip 8wt line that I already have spooled up.

Two questions:

First - Does anyone have any experience with two-handed/spey rods (fishing or building) and if so, any hints or warnings?

Second, more specific - Because 'balance' is more important with two-handed rods, I'm looking for a reel seat that has both uplocking and downlocking ability. This should allow me to move the reel at least an inch or so up or down the seat to even out the weight distribution. Does anyone know of any good ones out there?

Thanks for looking!