Have read some older threads on sidearms, but thought I would start a new one.. I would like to cheaply but safely sidearm two S4's on both sides of a vertical 1.5" pipe. City Theatrical's Safer Sidearms look good, but they are expensive, and I would need four of them. How about the Light Source Mega Sidearm (with adjustable arm), or their fixed version (both ok)? These are both cheaper. Or is there any problem just using a Rota Pipe Clamp or some kind of Kee-Klamp and a 4' piece of 1.5" pipe straddling the vertical pipe, which looks to be the cheapest method... Pros and cons for these options, or a better one? Thanks.