These are in my handlebar bag because its something I use a lot. It seems that reaching in and out of panniers and doing a lot of hand work breaks nails. Trimming a broken corner so it does not catch on anything else is way too common for me to be digging into the shower kit further down in the gear.
I like the cutting action on these Revlon clippers. They are very inexpensive and stay sharp for a long time. I added some Sugru to the lever on these to help with the grip.