Ive got iPhone with corp basic EPP that used to be UMB (now 3GB) that ive had for ages.

im contemplating getting one of the new apple watches.
just looking at smartwatch plans, Id presumably go for the shared additional 1gb for $10
is that a option?
if possible it would end up give me 4GB (1gbSW+3gbMB ) between the phone and watch for $20 bucks which doesn't seem bad i suppose.

i don't know if the 1gb smartwatch plan plan would play nice with the current 3gb mobile browser add-on i have or if they'd try to force me onto a new plan.

i know when this was UMB everyone warned about making any changes so im just wondering what my options are.