I'm in the market for a new general-purpose tripod to be used mostly for landscape and wedding photography and perhaps the occasional DSLR video. I've noticed a few brands (Manfrotto, Giottos, etc.) offering "transverse" center columns, which can be used to extend the camera horizontally as well as vertically (ostensibly for macro and superwide shots where the tripod legs may get in the way). Has anyone used such a beast? Any comparisons with the functionality and durability of a regular tripod? I've been very happy with my Slik 700DX, but it is heavy and doesn't pack well. I also have a Manfrotto 190XDB that is too light and "wobbly" for my needs.