FWIW, I sailed on a boat from Bermuda to NY with an in mast furler and that pretty much made up my mind. Even the owner didn't fully trust it and it was stock from the factory on a french boat starting with j. The leech was thrashed and made noise the entire way, sail shape was poor. Any convenience seemed offset by a nagging feeling of uncertainty.
For kicking around a bay on a small boat, I think it would be great.
On my boat I have the Tides Marine Strong Track and think it a terrific thing as well as being very simple - just the way I like it. Main goes up by hand and down as fast as you want it to.
I don't even like my headsail furler. It is often a p.i.t.a. but it just so happens to make for convenient storgae of a large sail. My staysail is a hank on and I can report 100 % function and zero problems. Plus it looks cool.