Carrying a Wave in your back pocket sounds not just cumbersome, but downright painful. I'll second the suggestion that maybe you should look at your carry system.
Does your Wave have a pocket clip? If not, maybe try that firstit's about $5, and just snaps right into the tool. It really does make a huge difference in how it carries.
Which tools do you actually need? The Leatherman Skeletool CX is medium-sized, lightweight, and has 90-95% of the functionality that most people need on a daily basis. It can be supplemented by a small keychain tool like a Leatherman Micra or Swiss Army knife for whatever tools you might miss.
If you want pocket carry, there's the Leatherman Juice line. Or carry a Swiss Army-style knife with something like a Gerber Dime or Leatherman Squirt. There are SAKs with pliers, for that matter.
And as mentioned, the Sidekick/Wingman are slightly smaller and more lightweight than the Wave, though not by much. I wouldn't recommend the Rev at all.