If he was not trained at the Shouldice Center in Toronto, Canada, I wouldn't go to him for this type of repair. If you want a Shouldice repair, go to the experts in Canada. And while they are the experts, there are quite a few accounts here of how they deal with patients - not all glowing I must say. But if you have your heart set on the Shouldice repair, you best go to Canada and have it done right the first time.
Arrghhh...Dr. Grischkan. I only spoke to him once via emails and he was somewhat indifferent or not interested. Maybe he made all the money he needed to make for that month, who knows. I read on other forums that he may not be taking new patients as he either doesn't respond to patients or takes forever to get back to them. I'm not sure what's up with that. He's getting ready to retire? Who knows.
If you're looking for a pure-tissue repair, there are other doctors that do excellent work. Petersen in Nevada has been mentioned before as he does alot of intricate mesh removal surgeries. That is important to know because you REALLY need to know the groin anatomy well to remove mesh that has balled up or migrated. You need to have an excellent working knowledge of what that area should look like after you're done in there.
Best of luck