Lots of folks use bongs, performance tips and external battery charger with the io.
The grasshopper is the size of a pen and is 90% stainless steel plus a serious lithium battery that takes the chamber from 70° to 430° in seconds. Reminds me of Spacex and Tesla in some ways.
I like the instant feedback I get from the original mouthpiece, it helps me to judge when to shut it off. There are two thin layers of SS separated by a tiny air gap between your lips and 430°f when you go to the max temperature, only about 1 mm thick. Some people say it's painful but it's not so bad.
Precise temperature control has lots of advantages. You make it as hot as you want it to be, under the circumstances, but it'll be at temperature and will continue hitting for several seconds AFTER you click it off and start cooling it down. It's powerful, and you can burn an entire fresh load pretty easily, so knowing when to shut it off helps avoid waste. It'll make you cough if you overdo it, some twisted folks seem to like that. Also, they give you a little rubber condom for the mouthpiece in case you don't like the feel of hot steel....
Hopper Labs markets the glass accessories, must be a lot of profit in that, and they offer the famous lifetime warranty for the device. Still, I'm not using mine that way. I've owned a lot of smoking accessories over the last 50+ years, they were helpful to minimize the long term effects of combustion, but this thing will saturate you just fine as originally designed if that's what you really want. It's only vapor and it hits the same with or without the glass bong.