Lumbar Punctures are not the best feeling. The first time I needed one it took them 3 tries to get it. 2 in the ER by the doc who couldn't get it done right. Then I went in for a floro guided and it was done right that time. Its awkward uncomfortable. The last time I had one done it was completed by a doctor while a few intern nurses and residents watched. He was in, out, and done pretty fast. I don't think its a common enough procedure for too many docs to be good at it.