Glad you found a 'whip sub' you already had. The glass can be expensive. I've seen quite a few replacement whips going for $40-50.The Silver Surfer 'wand' fits quite a few other vapes, is cheap ($16) but high quality, and most importantly (if you've struggled with others), screen changing is easy. They even have a video on their site showing how to put in a new screen.

As for not needing tubing with your glass blunt, I use the 8" glass bowl with my Vapolution-the herb end down in the hottest part of the heating chamber, the mouthpiece end in my mouth, and neither the glass or the vapor is hot. So tubing is for convenience. It's not necessary to cool the vapor. Vapor cools very quickly all by itself, as I'm sure you've discovered.