I wouldn't. Pointless having front suspension (even locked) and the hydraulic brakes are potentially more of a faff and unnescessary for a short commute.
Join britich cycling and get a further 10% off the Subway too.
I have a Subway by the way.

The non steel forks can be a little unforgiving at times but it's a fantastic bike for the money. Done 100+ mile rides on it, commuted in crappy weather etc.
They stock tyres are extremely heavy though and I swapped them, however for 6 miles you will be fine.