But I guess the battery life will be awful. 
After my experience with the Fluke 233 I've crossed any Fluke product with wireless off my shopping list for that reason. A meter which needs to constantly be feed new batteries is a expensive and a PITA.
Just get a batterizer?

- and to be honest maybe the ONLY application where you would get a real benefit... (Fluke 287/289 does not like rechargeable batteries very much - plug fresh ones in - and right there it thinks it is at 1/2 power)
/rant on
anyway - I think if they put some effort in to Fluke Connect to make up for what Fluke 287/289 can't do - that would be nice. But now Fluke Connect is as useless as a meat freezer on the moon. It might work "fine" for FMS work where you go around and log the occasional value here and there and need to document you did it. But the ADMIN alone to use it is bonkers.
So a 289 is great - but while long term logging - it does not show a graph. The FC would be great for that - if just it could maintain the connection and remember back - and have an AUTOSCALING graph and not only that "ticker tape" view. But neither Fluke or Tektronix are not really good at writing any kind of software that does not run inside their instruments.
So please Fluke... write your Connect Software to MAKE UP for the missing features/possibilities in the instrument
/rant over