I see absolutely nothing wrong with learning with tabs. I learned to play every song I know using tabs. I can read music, but it's easier for me to use tabs. I saw a lot of posts throughout this thread that had people asking "how hard is it to read blah blah blah? If you can read music, don't use tabs. Blah blah blah." It's personal preference. If you read sheet music, fine. Cool. I applaud you. If you use tabs, awesome. Nothing wrong with that.
There were also several comments about how different tabs look(in terms of sheet music, having the note above the tabs, etc), and the tabs I download for GP5 look like the picture I've provided. Some have the notes above it, some don't.