You are correct, I have one and recommend it. When I bought it I wasn't planning on using it for a spotting scope but now I use it for both spotting & shooting. IMO, it's the best shooting tripod out there - just wish it was a little cheaper. I am sure there are a lot better tripods just for optics for for dual use it can't be beat.
I have one but never got the interchangeable head. IIRC, the tripod itself was right around $100. For another $50, its probably worth it. Of course that leads to buying a pair of 15x binos, so I guess the true cost is pretty high.