Thoughts on the Rocky Mountain electric creaser?

When I tried it, my friend had the following kit, it has all the basic tips in small sizes. Then if you need, you can get the 3 or 4 tips that you will use the most in their regular expensive size :p

www.rmleathersupply.com

The Rocky Mountain Summit - Mini Tip Set includes 21 mini tips + Universal Base Tip. This set includes many of the most popular creasing and finishing tips to give you versatile set for all your different creasing requirements. The mini tips easily screw on and off the universal tip. The 22pc set also includes a nice w

crimsonhides.com

A set of 21 tips with optional adaptor(s). This set allows you to have the following tips:  G1, G1.5, G2, G2.5, GN1, GN2, GN3, F1.5, F2, FN1, FN2, FN3, A2, A2.5, A3, L1, L1.5, L2, L2.5, S0.5, S1 The mini tips has to be paired with an adaptor (both long and short are compatible) for usage. They can also be paired with o

same kit, 2 different sources.

There are cheaper alternatives on AliExpress, but i never tried them and I would not know how good or bad they are.