I tried them this week via their Facebook account. Reach out to them and they'll be able to send you a handle with a regular blades, plus a 4-pack with your choice of sensitive or ultra-sensitive blades. The handle was too light for me, not a great grip, and even going against the grain left too much stubble on my head.
All that said, YMMV. They do offer a money-back guarantee, so you have nothing to lose. Definitely worth trying out.