The recent ISA article says,
"considerable expense can be involved in purchasing the proper equipment to use in an SRT system, and this should not be underestimated. However there is no room for makeshift or piecemeal equipment in these systems without jeopardizing safety"
A perfectly good and safe entry level SRT system that is efficient can be rigged entirely out of rope and soft gear. If you have carabiners they can help. Then you need some sort of descent device. SRT is just climbing rope. SRT can be as simple as footlocking. I wish he had mentioned that in the article.
I think srt on a fat 9/16th double braid rope is awesome. You can really do some tarzan like stuff swinging on a big vine and you can climb it fast because it such a nice handhold. especially especially nice on a removal. SRT fat lines is much more efficient unless you have to pull your rope around a lot, that can be tiring. The frenchie twin line prussic style is awesome too. they can 1:1 or 2;1 at will.
1:1 vs 2:1 they both have there purpose but I don't see one being more complicated or expensive than the other. anything is as complicated and expensive as you want to make it. complicating things is fun and part of it too.
I feel that SRT has this rep of being gear heavy, complicated and scary. It really is not that way at all. Ascend rope... descend rope.