All depends on the sort of career you aspire to.

If you want to be a planning bureaucrat, a gis monkey for a large engineering firm, or a cartographer - then yes.

If you want to be a landscape architect, maybe.

If you want to be an architect, then no.

If all you want is a job once you graduate, then maybe.

Getting my bachelors degree in Geography I took several GIS classes and really enjoyed them.

GIS is about spatially mapping information in order to draw significant correlation's or results that otherwise might not be so apparent. Since, architecture is largely a visual field, especially in academia, I found GIS to be a great tool in preparing site analysis, traffic studies, zoning and use diagrams, connectivity studies, demographic analysis, etc.

Of course you could be a Archi-snob and claim that only lame planners use GIS, or you could think about the qualities that a visual mapping software might bring to YOUR studio project and become the guy/gal everyone is asking for tips when they try to teach themselves GIS to perform studio research.

GIS seemed to be a helpful tool for me, not to mention working as a GIS research assistant in my schools COA paid for my Masters, so then again, maybe I'm biased.