Well, the return to mountain biking after three months of using a road bike has been a strange one!
Prior to getting the road bike I figured that my mountain bike was pretty light, but in comparison it's massively heavy! I can still hit about 23+ km/h on the way to work but the uphill journey home is a bit of a struggle.
On an up note, my journey time to work is only 20 mins or so and of course it's a lot cheaper than the train!