Hey Ernie, unless I'm missing something, FD doesn't have a TC blade. I think you mean UR which stands for Ultra Reverse. It an excellent blade to start with.
I use the FD UR blades and I also use Olson skip tooth and reverse tooth blades. As a scroll saw instructor, I start my students off using Olson skip tooth #5 blades. But starting off with FD UR blades will be fine.
Curios, do you have other woodworking tools? Although a scroll saw will cut pen blanks to length, it would not be my first choice. A table saw would be my first choice and a band saw would be my second. If Al your doing is cutting blanks to length, go with the biggest blade available.
Good luck and let us know how it works for you.