the t:slim is brand new, so not sure your endo would have... but for what it's worth, the only issues I'd see with the t:slim are 1) not waterproof and 2) the durability... my insurance only approves a new pump every 4 years... I couldn't see myself with the same iPhone for 4 years - and not sure how their warranty is (though my regional Tandem rep says the screen is "crack resistant" whatever that means). as much as I beat my pump up, I need extreme durability and for the thing to be waterproof but that's just me... it DEFINITELY looks cool though