I bought this product to use at school, so I didn't have to bring a heavy interface with me. The SB-5 is sturdy built, as are all Radial products. As far as the connections go; it's a pity there is only one XLR connection, but I guess that's the compromise you have to take if you want something small and light. It is very compact and easy to transport, thanks to the brackets to hide the cable. It's also very lightweight.
One bigger con is that it gives a hum in some situations, which is very unfortunate. It's isn't problematic in rehearsals, but when on stage it was a little too loud.