I've had a couple now with the elec switch. I haven't had any problems with them. I also do not find that the truck has to be rolling to get 4hi. Many times I have turned the knob in a steep parking spot and backed right out. it engages before I even move the truck. To get to 4lo you MUST be stopped or you are going to hurt something. Again, no need to move at all and never a problem getting 4wd exactly when I want it. I think that stems back to older systems that had to lock the front hubs too. On our trucks the front axles turn all the time so all you are doing is engaging the t-case.
Has anyone ever looked to see if an elec t-case could be manually engaged from under the truck? If for some reason the electrics failed could you still engage the 4wd by hand, even if you had to get a little dirty to do it?