Painter's Pole Mic Adapter

Having homemade rigs around for awhile means I get to revisit them and hopefully come up with improvements. This time out I was examining my DIY Boom Pole episode (as well as others out there) and came up with a unique variation. Instead of modifying an existing pole, how about a portable attachment that fits onto any painter's pole (and broom handle) threads that can also double as a pistol grip?

PARTS LIST
Paint roller (dollar store)
Microphone Clip: http://tinyurl.com/crwvevb
5/8" to 3/8" adapter: http://tinyurl.com/ccokpmb
3/8" threaded rod (hardware store), 3-6" long

Optional Frugal Shockmount adapter
3/4" PVC coupler: http://tinyurl.com/7auvjhc
3/4" to 1/2" PVC bushing: http://tinyurl.com/6ue3geb

TOOLS
Drill with 1/4" & 5/16" drill bits
Two pairs of pliers
PVC cutters: http://tinyurl.com/8yme674
2x 3/8" nuts