I just broke my newest seam ripper cutting hair off the rollers on my vacuum cleaner! The thought of a scalpel seam ripper gives me the heebie jeebies even though a rotary blade doesn't and I have on occasion used an open cutter for long rip outs. For short rip outs I just use whatever is in the bowl of pins.
I think I will try a "CLOVER" since so many have mentioned it....