CALL 641.777.9881, Albia, Iowa Vet Clinic. I can't remember the name of the clinic. Usually have some already made up and are fair on prices. I almost always ask for Dewey, in fact the number is his C. Great PPL to work with in my experience.
I have had several gomer bulls through the years and the bulk of them have been Jerseys. They have all been herders and yes you do need to be aware of them at all times. I have never had one actually "take" me but they sure act like they would like to. Most have been easily trained to go in and get their marker refilled. I like that they don't get too big so that you can keep them around for some years if you would like to and they of course don't eat as much as a larger breed would. Dewey made me a sidewinder last fall & had several Jersey bulls gomered and ready to go at that time.