Since I play short scale basses, I have had the same problems. For a nickel roundwound, I suggest D.R. Sunbeams. They are very flexible, and also come in the gauge you are looking for. Also there are no silk wrappings on the ends to look funny. Just trim the string as you need, and be careful putting it on. Works great, and I have not messed one up yet.
The T.I strings you are talking about will definately fit a short scale bass. I know that some string sets say short, but are actually too short for an Alembic. The TI's are long enough so that the silk wrappings do not come in contact with the nut on the headstock.
By the way I think the 40-60-80-100 gauge is perfect for an Alembic short scale bass. Anything thicker and sometimes it is tough to properly intonate the E string.
Michael