If you’re looking to venture into WHs I don’t think the ‘warp tank’ idea will help, because of Interdictors. A bubble on the WH/site will prevent you from warping anywhere, and due to the higgs rig you’ll be much slower than usual, so burning out won’t really be an option.
In low-sec systems it might assist with getting you out of gate camps, if it gets you into warp fast enough.
I have seen uncloaked Probes running sites in WHs, they sit on the ‘in’ WH while scanning, then head off to do a site. So long as you’re not scouted in advance you should be able to get out if anyone appears next to you in a site (i.e. they don’t already have your exit bubbled). This works best if coming in from high/low sec systems as the other side of the WH can be bubbled too in Null/WHs.