One thing to consider with the VG is as a pass around, you will have to be instructing people how to use this thing, so they don't ruin it. Also the Coil version will get hot pretty fast, so you might want to consider the other larger pipe styles for a pass around piece.
The metal pipes are going to be easier to keep clean than the wood. I just ordered myself one of the hand carved pipes, to complete the line up for me, I have the coil, the glass sherlock and waiting on the hand carved to show up in a few days. I might pick up one of the metal body pipes later on.
I just started using flame vapes myself, but have been vaping for some time now with powered devices. Another smaller bat style to look into is the Vapor Lithe. I have not used that one yet, also waiting for it to show up so I can try it, but it looks promising.
I hope you enjoy flame vaping, the main points to keep in mind when using them (so I have discovered recently) is, don't touch the fire directly to the heat stone, only let the tip of the flame kiss into the top, otherwise it will form soot on the heat stone, and you will taste it. Consider the first couple of hits, warm up hits, once it gets warmed a bit, the vapor production is better, and faster. Use a med/steady, even draw, if you pull too hard, too much air can cool down the stone too fast, and I have also found it can spark up a cherry if you have the stone heating too hot, and you pull hard. Less is more, if you start to get a hit, it's better to back off the heat and get a smaller hit, than to over do the heat and end up burning it. The stone will continue to vape the material for a few seconds after heat is removed, so keep hitting it. If you want to use blue flame torch, keep it pretty far back from the heat stone and gradually bring it closer, it will burn your load fast if not careful.
I hope some of this helps... good luck to you, and please come back and tell us how it's going.
**woke up way too early, can't sleep, so I am watching vids...
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Check this out... looks like he's using a standard metal bowl (from back in the day) to screw the genie top into so he can hook it up to a waterpiece. Too bad I tossed that stuff out years ago...Not bad...