i have a tru-cut--i do not use it! it seems more dangerous than anything else in my sewing room i've ever tried to do- you really have to handle the blade-alot...and it's not easy-once you sharpen it again you are handling that blade trying to get it off the sharpener-then reloaded onto your cutter for half a dozen good cuts---they do not seem to (hold an edge) very long- i would rather spend the $$ on good quality blades that tend to hold up for a good length of time than risk stitches for a few more good cuts.
i don't remember the site right now- but someone on here posted a site where you can send in your used/dull blades and receive new replacement blades for a very low price...send in 10 blades, receive 10 blades- for only about $5...i will see if i can find the post- that seems like a much better way to go than spending money on a sharpener.