And had a pretty good time! Definitely seemed shorter than our games of 40k at around 2.5 hours, even though it was our first game. Tried using 9e Tempest of War missions which was probably a mistake as most of them don't make sense with alternating activations lol (and my opponent was guaranteed victory when he drew Raise Banner, Secure No Man's Land, and Tempting Target all on the same turn). Most of the proxies made sense, though there's the odd weirdness like primaris units having 2+ saves but still only one wound.
Other thoughts: Tanks felt super tough but otherwise weak unless you spend tons of points on upgrading the main guns, which was disappointing. 2k points definitely felt low. Psykers were more complex but pretty fun. The decision of whether to activate what you wanted or something that would probably die if you didn't activate it right now really added some extra pressure that I enjoyed.
RIP my Manticore that died first activation to a Scouted ATV with a Deadly (6) multimelta.
Final Score: Imperial Guard 65 - Space Marines 78
The one page 40k clone is very cool. Really distills the game down to it's vital essences