We bought one when DH went air shock but his Anthem came with a Giant one as well. One has died - don't know which.

I used to check both of mine (front and rear) each week but found it was spot on every time, so I backed off to checking once amonth or so - still spot on. I've got a bit slack - haven't checked it for about two months now since I did the full let all the air out of the rear and check pivots were all still moving sweetly.

Probably should check it again - thanks for reminding me! I sympathise with your DH, since I am usually a bit OCD, but never so much as shock pumping every ride. But I am OCD about pumping tyres each and every ride (on all bikes) - hate pinch flats!