I voted "yes" for both, but that's because I'm assuming the book wouldn't be stamped and that would affect my resell price as the new buyer wouldn't have been able to meet and speak to the DIY servicer.
Personally I'd leave it in with an indy and get the stamp and continue to service it yourself in between services for XY or Z reason and keep note of these. That's pretty much what I do, and keep receipts for anything I do myself, i.e. plugs, brakes etc. Although with most of my parts coming from this forum, sometimes you don't get receipts, in which case I just write what I did, the date and mileage on the last receipt in the folder.
It's as much for my benefit as a potential future buyer, so I know how long these pads lasted, or these tyres etc etc.