Blender and SU are different animals. The loop select/create feature in Blender is definitely a great option but in SU it would create a lot of geometry. SU isn't something geared around topology and quads. If you trial the tgi plugin you'll see the impact these cross cut sections have when you adopt a Blender like workflow. Models file size grow rapidly as you increase the vertices.
A small price to pay when you consider how intuitive SU is. Blender is truly an amazing app but it's got a big learning curve. There is a member here who absolutely rocks at Blender and his output has encouraged me to learn it. Currently dissecting the 'For Dummies' book and tutorials. But I wouldn't wish for SU to change anyway!