It may come in handy later with the ginormous HD's which are coming needing unlimited partitions, but we have a way to workaround partition limits anyway - 3 Primary and unlimited Logical (data) partitions.
Otherwise many of the important workarounds for Windows 7 Installation, automated boot repair, Multi-Booting, etc which were pioneered here need retooling for UEFI installation and repairs. This is daunting with the workload we have as the busiest tech forum. We welcome more help especially experts at EFI like Saltgrass who has rejoined us.
Just the UEFI installation tutorial which is first to show up here is difficult for many: UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with - Windows 7 Forums
Others may contribute since this thread will quickly go to the top of the Google search results thanks to your pithy title and first-hand current and timely report.