I bought the One Up 100c about 6 months ago.
Pros:
Brilliant pump, probably the best bike mounted pump I’ve used and to paraphrase Monty python, I should know I’ve used a few!
obviously can put the EDC tool in it.
Good bottle cage mount – very strong and secure.
Has a co2 nozzle built in
Cons:
Expensive if you lose it as I nearly did, especially with the tool in it! (Didn’t come out of mount btw was me being idiot)
Heavy and a large form factor – not one for the jersey pocket that’s for sure.
Dents and scratches easily – looks used quite quickly.
All in all Id say it’s a good bit of kit and they have definitely thought about the design unlike every Lezyne pump I’ve had the misfortune to use.