Seriously Roy just ain't good enough to play test cricket purely as a batsman yeah if he could have added some depth to the team with his bowling then it still could have been a bit more bearable (but his bowling sucks too), it would be a lot better to a gamble with Noffke rather than Symonds and if Australia are too inclined on having a batsman who can bowl a bit then even the likes of Katich, D.Hussey or Hodge (yeah i know their bowling won't make any batsmen lose sleep but they offer a lot more with the bat when compared to Symonds).
I can't believe I'm doing this as I've been the most vocal critic of Andrew Symonds in the past, even when he's done well, but I think you under-rate his bowling a bit. I don't think his batting is good enough to be a test #6, but within the context of the Australian side, not even I think his selection is the most disgraceful thing ever. His bowling is a lot better than I thought it'd be at test level - he bowls a bit quicker than I thought he could and swings the ball with decent control. I've seen Sri Lanka select players as a specialist pacers who were worse bowlers than Symonds, even if his action looks dire and he has no run-up.
He's not really a test cricketer IMO and I probably wouldn't pick him if I got the chance, but with the flat pitches in Australia and the strength of Australia's 1-5 + Gilchrist, I can see why he's picked. If Australia pile up a big score amongst the first five batsmen, he
is capable of really "rubbing it in" by hitting a tired attack around on a flat pitch. His bowling is definitely good enough for someone who bats in the top 6 as a fifth option (even if I don't think his batting is) and the role he plays is actually a pretty reasonable one within the current team.
Honestly, I'd still pick Noffke ahead of him. And honestly, I still can't stand watching him play and hope he fails whenever he goes out to bat. I certainly couldn't see any other test team worth their salt picking him, and that's a strange thing to say about a player in the best team in the world in a pivotal role, but I think he fits in with what the Australian team need at #6 at the moment given their relative batting and bowling strengths as well as the state of the pitches in the country. I "get" his selection, even if I don't really agree with it, whereas I was religiously opposed to the principle of it before.