Opie, Ya there worth it, watch your finger's, @ when you here them bawg-down, clean the hash off, I hear ya on the cramp's in your hand's. You can catch-on to them quik. I would use them right at harvest before you hang, It makes it easier @ you don't disturb less trich. glad's.
There are also The "Big Red Shredder"-Trimmer from Kind Seed.com, You just roll the bud around it @ it trim's for you, There kind of hard to clean, But easy to use!!.....Later