For me the lens is just too heavy. I'm sure it would make an ideal lens for a lot of people though its just not really a travel lens, is it?
I also don't like the way it zooms, it looks weird.
I've only had my 24-105L for less than a year but it's already my most used lens. Yeah it has it's faults but damn that thing is just so useful. Kudos to Sigma for making a cracking lens though.
Exactly. A friend of mine *really* wanted to like it, but they wanted it as a sort of travel/backup kit lens. Too heavy for his work. I think there's a good reason that Canon is such a well travelled and sold lens: it meets a very good quality/weight/versatility balance.