Hans Peter,
I have this combination and it fits well - there is actually more room than required in the front case (GC-212) - I have both a UV filter and hood attached aswell. It is an expensive combination (as many have already noted), but the solidity of the camera case has saved my G2 a couple of times. The case itself is not ideal for tripod use, nor for portrait (vertical) shooting - the front piece does get in the way (and is too awkward and large to take off and stuff in a pocket) - but is great with the 35-70mm as an easy-to-carry, cover-most-situations, combination (put the TLA200 in your pocket) and for looking the part of the non-threatening tourist.
If I to choose again though, I would not buy either the case, or the 35-70mm and would stick with the combination of primes (I use 28, 45 and 90) and the G series nylon system case (cheaper than the GC leather case and front piece). This is not due to any perceived quality issues with the 35-70mm (I cannot fault its clarity or quality), it is simply that I feel more comfortable with the primes - I know what I will see with the respective focal lengths, and actually prefer moving my feet to get the better shot, rather than zooming the barrel.
Also, I find that the loss of framing view (with the 35-70mm), in an already small viewfinder - is distracting, and the reduction in maximum aperture to be restrictive on occasion. But it's really about what works for you and your own style of photography.
Hope this helps,
- David
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