Strange plumbing issue and RO unit

This might seem stupid but i never thought to put my RO unit in my least used shower.
Have you had any other problems with the setup. I was wondering if you could replace the silcock with a shower diverter that are used for after market handheld sprayers to showers (like the ones used for washing dogs), this would allow the shower to be used if needed.
 
A shower diverter valve should work just fine if you still want to use the shower occasionally.
 
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