@Tlactme, @lotuseater I think the ThinkPad T410 might fit into the Synapse with a minimal sleeve, but not if it's being stowed with the extended life battery increasing the width of the laptop by sticking out the back.
I'll excerpt from
this forum post in which Magic Tiki was considering a bag for his ThinkPad T410, and where I posted a picture of the 13/15" Cadet with a 13" MacBook Pro inside as a reference comparison for the T410.
I think that the Cadet might work for you, but it might be more comfortable with a little more room. This holds significantly less than my Synapse, which is what I usually travel with. And my first reaction to the idea of the Smart Alec, like others, is that it's huge in comparison with Cadet, and also larger than the Synapse. (Think about the Smart Alec as a bag that basically takes up most of the underset room in an airplane, assuming there are no A/V boxes under the seat, whereas the Synapse can fit under seats even when there is a large A/V box taking up nearly half the room, and you're on a small, regional plane.)
Another bag that would accommodate your laptop and iPad is the Buzz...
moriond