They're heavy, provide inferiour cushioning compared to pnematic tires, hard to install, they slow you down, people say they feel like you're riding on a nearly flat tire.

But a few people claim that these trades are worth it for the times they absolutely need to get someplace on time and cannot risk delay due to flat. I think I've seen that opinion stated... 1 time.




And what is up with this, ??have to deflate down to 80 psi before you can start inflating higher?? Sounds like crap advice from that LBS. If you have a pump that has a max rating of 80 it certainly would never go above that. And if you have a pump thats already good enough to push to 120 then there shouldn't be any reason it needs to start at 80.
Just try doing it normally, top of the pressure without wasting the effort of partially deflating first.