Certainly not. Now that many peripheral blocks are ultrasoud-guided (based), there is no reason why these blocks are "out of your realm of training" (if you get the training for a skilled preceptor).
Sorry to dredge up a 2-week old thread but I was browsing your forum ...
The fact that most blocks are now trivially easy with the aid of ultrasound is a red herring. The question isn't so much whether or not you can do the blocks (any physician, PA, nurse, student, or moderately well trained monkey can do an u/s guided femoral after a couple of guided reps), but whether you're prepared to manage the complications.
Note that I'm not criticizing emergency med docs for doing these blocks, or trying to suggest that they're not equipped to handle seizures, CV collapse, pneumothoraces, inadvertent epidural/intrathecal injection ... I assume they all can manage an airway, support hemodynamics, give intralipid, find the 2nd intercostal space without a map, etc.
🙂
I'm just saying that by declaring ultrasound's technical ease the reason blocks are within the EM physician's scope of practice, it sounds like you're missing the point. The real danger of a block has nothing to do with its difficulty and everything to do with ignorance of, and/or inability to manage, potential complications.
/ off my anesthesia high horse now
🙂