The total time for me to make the switch was about 30 minutes and that included the initial download of data which took about 15 minutes. I did have to re-do my custom channel mappings (my own deal/choice as I have the Charter channel numbers completely remapped) and re-schedule our series recordings. These tasks took some time, channel numbering in GuideTool a couple of tedious hours (but most won't have to do this if you stick with the CableCo's channel numbering) and another ½-hour was used up re-doing the schedule.For me, it's a time factor. I'm half-kidding, but my system always seems to have some unique issue that causes any installation of anything to find some way to abort, forcing a lot of "by hand" work. Murphy's Law. I'm already anticipating my blend of tuners and sources is going to throw a wrench into EPG123, so I need to allow for that time when I install it. IOW, a full day. If I don't do that and there are problems, I get anxious. If I DO figure in extra time and all goes smoothly, I get extra beer time. Much better end result. I'll get there. Just not for a while.
As for the WAF, there really isn't any. The programs she wants to watch wind up edited and on a thumb drive. She can plug that into her TV of choice and watch away.
Figure on maybe an hour. If you follow the instructions explicitly and either stop all eh services and processes or simply boot into safe mode (F8 while booting) all goes quick and smooth.