it would be good until you beat priest in peril and started creature of frankenstrain and train on the lvl 25 experiments which have 100 hp and never hit unless you have no armor. Though Experiments have a lot of people and so do yaks. I find that yaks respawn faster (5 seconds) and you can usually find a good world to fight them on.
experiments are for low levels. they have no drops, yaks are better.