While I don't have any experience in 150s with the swept tail, I have extensively flown (50+ hours) in a Texas Taildragger 172 N6303E (FNL) as well as 50+ hours in a Bolen 172 N737TD (BJC), both N models with swept tails. I actually really love these airplanes. I found that when I was in them there was no such thing as "over controlling" the rudder, but that being said I didn't find it to have any less rudder authority than any other light taildragger. I'm rather short but found the visibility over the nose almost as good as a Citabria.
I found the STOL performance to be worse in the 172 taildragger vs a nosewheel plane, but both I flew had some older engines and I believe had cruise props, which isn't ideal at altitude.
Compared to the 180, I preferred the visibility, control lightness and simplicity to the 172's, but of course they lack power, space and STOL compared to the 180... that being said a 150/150 will only be short on space. It's like any other taildragger really, it has its quirks but really no issues with authority. I've flown the Skywagon in gusting 35 30 degrees off the nose in CYS, and 20 knots direct in WI and it was pushing the limits. Any lighter taildragger those limits are going to be lower, I'm not sure I'd want to go over 12-15 direct in the 172s but YMMV.
FWIW If you were interested in a 172 instead of a 150, 737TD I believe would be for sale if you called Western at BJC and asked about it. Insurance made them take it off of the rental fleet. I really love that airplane and if I didn't buy a gem of a 180, I'd own it by now. You may have seen pictures of 7TD on my facebook page.
- Austin