I've got a couple of those cases in different sizes and they're pretty nice - the length might be ok. It's a bit hard to say from looking at the numbers.
I just checked a 1W case (length = 12.5 cm) with a 100/2.8L macro (length = 12.3 cm). That lens actually sticks up out of the case more than a cm. The case closes fine, but it's tight. I'm wondering if the spec from LowePro might be a bit optimistic.
Also - the way it's listed on Amazon, it's not clear that the 13cm is internal, or external. On one of these cases that's a pretty big difference (1W | external = 16cm, internal = 12.5 cm)
FWIW - I didn't measure anything - got the lengths off that web thingie.