/\I was thinking exactly the same thing.
I'm going with 24" wheels on my Dirtworks Monster.
The rolling diametre of my 24" Intense tyres is only about 3/4 of an inch less than a 2.1 26" tyred wheel.
I've gone for a 200mm rear shock, which is the standard length, but with 10mm less sag. There is enough clearance for a 215mm shock which may come later
Front forks are 20mm longer travel than standard.
By my reckoning it shouldn't be far from 26" wheel geometry.
I was also tempted by those wheels as they are a good price, but i'd already bought rims and hubs
The older I get the faster I used to be......