OK, look! I've been looking and looking, but...

[ameerat42]

(OK, only in local camera stores) but I'm yet to find a suitable (well, I thought backpack-type) camera bag.

Here's what I'm looking for to replace my 1980s-style, Tristar-brand camera "schoolport" for travelling, and a soft day-pack bag for hiking:

I think a backpack...
It has to be able to take a DSLR with a Σ50-500 telephoto lens attached...
Have compartments for a 2X converter and another lens (I don't take that many with me)...
Be cabin-luggage compatible...

And, since it will become the main and serious bag for transport AND hiking it must also:
be big enough to also take a netbook computer AND 2 pairs of socks and the same in unmentionables.

Nothing I've seen so far has been good enough. Yes, you pay the dough - it's "camera-gear" after all - but you only get a compromise.

Ta, Am(getting anxious!).

PS: Can't somebody say: "Yes, get a such-and-such..."
PS again: I really thought it would be easier than this.