I'd be tempted to get one with the 90 degree at the MFDB end and one without just in case. As you know the plug drops pretty deeply into the back and it doesn't look long enough in the pics. (At those prices if it works great, plus you'll have a spare. If not, oh well there goes $15 or cost of a glass of wine ...).
I'm particularly interested in trying the usb angle cables with my Sonys too. One of the major pains is with wired access to the side for cable release and tethering when using an L clamp. If a micro USB angle plug fits it would be ideal for that use too.