Soldato
Interesting. Do you or anyone use such a a thing? I'm never likely to go beyond an hours session due to my blinkers but I do recall the vive got very toasty at times.If you're intending on getting getting a bit moist in the headset, then I'd highly recommend a facial interface with an extract fan fitted to it as sweat can very easily kill the electronics in a matter of weeks. Make sure the fan is set to extract and not blow as in the image.
https://www.amazon.co.uk/Aukuoy-Cooling-Facial-Interface-Cover-Q3-Fan/dp/B0CX7YK6CG