I finally used a sweater shaver for the first time last week - i'd had one for years, but hadn't opened the package as I was worried it would eat my precious hand-knit sweaters. Then I realized I wasn't wearing my favorite since it was SO pilly, and well, if I wasn't wearing it due to pills, the risk of ruining it by cutting holes in it didn't matter so much.
And thanks to Kelly Petkun's knit picks podcast for reminding me I had one of these lurking in the bottom of the sweater drawer.
I wish I'd done it sooner, and I've now got several sweaters stacked up to shave.
FWIW, I have something called a Fuzz Wizard. It's not super speedy [or perhaps that's because the 4 & 2 year old want to help me use it.... after making a hole in the sock he was wearing, the 2 year old is not allowed to use it any more.] but it does get the job done.
Anyone else use these, and have favorite techniques? hard surface? soft surface? circular motion? back & forth?