Right but only as long as the attachment is designed to have the heating element at vaping temperature continuously for such a long period of time. Until Ryan confirms that it's okay for the Splinter and that it won't char the inside of the wood shell, I wouldn't recommend that feature.
We know it works in the Tubo because it's been tested and developed by FJ himself. Don't know for instance how it would end in the iHeat that has no internal glass sleeve. Could be fine, but also could be not.
I can cruise for 4 minutes straight on 390 or so and the outside of the wood just started to get warm. It's gotten significantly hotter under normal use without cruise using Wattage mode with my 14mm reducer as it holds a lot of heat in the reducer.
Just adding my experience so far! I'd never cruise for that long typically or ever at all with Wattage mode, but on lowish med temps on TC I can comfortably cruise for surprisingly long.
Edit: just did a 3 minute 380 cruise test without any inhaling. Just a sitting cruise. For science.
1 min - first start to feel warmth around the heater area of the wood.
2 min - can tell the wood is getting warm now
3 min - wood is undeniably warmer than the room temp but still not really hot. Sorta decent hand warming temp. Wood towards the top of the unit where the adhesive is remains room temp. Wood gives off a slight walnut smell like my Vapman as it warms up. Nothing burnt or out of place. Just warm wood smell.
Remains cooler than my Vapman when in use and similar to my Milaana / Zion after a sesh.
Keep in mind there was no stem to conduct Heat, and no airflow to lower heat of the heater or distribute it. Results will vary when in use.
Also keep in mind you can do what pak does and cruise for 25 seconds or so and just cruise 1 hit at a time. I set mine for 3 minutes and normally will cruise 10 seconds to warmup and take a hit or 2 then cruise off. If going through water I only cruise while hitting then turn off. After all it's super simple. 1 click ends cruise, 2 clicks starts it again.
Remember this isn't like the Milaana. If you're in TC and don't see the heater glow red in 7 seconds or so, it'll never reach that point. Even a cold Milaana will eventually glow red given enough time. In Wattage mode the Splinter can definitely climb til you see some glow. Haven't seen this in TC tho and I've looked many times after long idle cruises.
Just some random points for anyone to ponder over!
By the time I finished writing this edit the wood has cooled down completely to room temp.