I have a 2021 Matryx XC 129. Ordered with high windshield (which looks no where near as gaudy as I thought), and NO handguards. It is the warmest handgrip sled i've owned, coming off 2016 AXYS Switchback Mid-windshield w/ handguards, and 2012 Pro-R Switchback w/ handguards.
The bars warm up so fast compared to previous sleds above, that I can get on it for a long lake ride at -10 below, after it has sat for awhile, and they are warm pretty fast. This was a recipe for frostbite on previous models. I was a candidate for heated gloves, as I have frostbitten 1/2 of my fingers in past, and my tolerance is low for cold bars.
The adjustable temps at ALL 3 levels give you a wide range of temps to choose from. Your friend has to adjust his settings.
I hope this helps.......