Well, it came in today(yesterday actually, I didn't realize it until today). Probably not going to have a chance to play with it until the weekend, but for what it's worth:
When I talked to them on the phone, they said they keep them in stock,(that's a good sign!)and ship out same day. Purchased on Thursday, sitting in the office on Monday('had 'em ship it to where I work) It came in a priority mail box(USPS) with a $4.95 stamp on it. They charged me 5 bucks for S+H, so that seems pretty fair.
First impressions out of the box: Very good documentation, 4 pages of instructions including early and late model hookup, as well as for the '93 ZJ Grand Cherokee, which also had the AW-4. Another page containing diagrams and charts for pin-out on the early and late computer connector plugs. Also paper templates for drilling/installation.
The harness/controller is high quality construction, and looks a little more complex then the average 1-2 switch. As I understand it, a wired switch is usually 6 wires(3in, 3 out) on a DP/DT switch. This rotary switch appears to be a Quad pole/Triple Throw. It also has 10 wires coming out of the base of the board. It's also lighted and dim-able with the dash lights(might explain a few of those wires)
That's all for now, I'm going to cross-post this over in the OEM tech. forum, and when I get it installed, I'll post a writeup here.