...
24-105
-much lighter lens
-also excellent build quality
-the best walkabout lens ever
-however F4 so not that good for potraits i find, unless you have a 5D which has a better depth of field
...so if you want a walkabout lens the best lens is 24-105...
A lot of sweeping statements here with a lot of support lacking. Let's start here. When you say "much lighter lens", it's in comparison to the 24-70. However, it is still significantly more weighty than most other conventional lenses.
To say that it is "the best walkabout ever" is just your opinion. You go on to say that it is the best later on, like it is a matter of fact. You don't even support why you say it is the best.
f/4 not being good for portraits is relative. Once again, you are stating it like it is a matter of fact. Portraits does not always mean "eyes-in-focus-nose-out-of-focus", insane shallow depth of field. As with all kinds of photography, there is diversity even within one genre. (By the way, there's no such thing as "better" depth of field (DoF) either. You can have shallow or deep DoF, but which is better depends on your situation.)
17-55
-excellent lens as well
-nice, small and cute

-but don't really like it because of the range.
-IS is kinda pointless!
I always say, sometimes you can step forward to get a tighter shot, but in a small room, you'll never be able to step back to get a wider shot. In your case, you have a 10-22 to cover your wide end, so having a 24-105 as a main lens is not a problem. However, please also consider that the TS is not coming from the same approach as you.
To say that IS is kinda pointless is yet another sweeping statement. A 17-55 is approximately a 28-80 equivalent on a crop camera. Why do you think many people, even full frame users, would love to have IS on their 24-70s? Because it is THE walkabout range. And maybe you can handhold at 55mm on your 1.6x crop camera at 1/4s without assistance, but not everyone can.
now for potraits, i guess the 50 1.8 is good enough. no point spending more on the 85! unless you get the 85L...
I fail to see the logic of your statement here. 50mm f/1.8 and 85mm f/1.8 are very different lenses. Have you even used both of them to be able to say that there's no point in spending on the 85mm?
In this case, we should buy the cheapest of everything. No point spending on more expensive lenses unless we get the L version of everything. You also should buy the 50L instead of wasting your time on the 50mm f/1.8 :dunno:
Their focal lengths are not even the same to begin with, neither is the compression or perspective that they offer. Built quality, as well as image quality, is vastly different, with the 85mm totally trumping the 50mm f/1.8. Hold one and you'll know. Use one and you'll know.