Are you travelling alone, or with someone else?
I ask, because if you are travelling with someone else who also photographs, it may make sense to plan together.
Which lens and camera combination together is the smallest? If, for example, the G2 with a 35mm lens is the smallest, I would be sure to take that, because there may be times you want to leave some of your gear in a hotel safe, and take with you as little as possible.
Do you like to shoot different films (e.g. C-41 and B&W)? If so, you should consider taking two cameras.
I wouldn't want to be without a moderate telephoto, so I would be reluctant to take just the CLE, but you may be different.
In my case, I would be sure to take at least one 35mm lens, because I really like that particular focal length on 35mm film, but you may be different.
G2 with 28, 35 and 90 would be my choice if I decided to take one camera only.
Hope this helps.
Matt