It will change your life, Don! I know you are heavily into guitar emulation... The way the strip falls under your fingers, you will be amazed at how quickly you're are doing stuff you couldn't dream of on the lever.
Plus, it's amazing for horn and wind parts... trills, scoops, legato lines (by using the strip to change notes rather than re-triggering the sound).
Lastly, it is the ULTIMATE sitting in rig... You take up no room on stage, need next to no gear, and, being one handed, it removes the ability (mostly!) to overplay, and step on people! Sure, for full piano parts, it's very restrictive. But everything else, it's a jammer's dream come true.
Plus, it's cool to move about while you play. Watch out, you poser guitarists! Keytar's coming to rock your world!
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An arranger is just a tool. What matters is what you build with it..!