Here's a photo of a dreadnought I've been working on for my Night Hawks. Originally I was going to attempt to model wheels on him but the proportions were all wrong and I couldn't figure out a good way to incorporate wheels and legs. I didn't want him to just be a car but a transformer (to still function as a walker). Regardless this plan failed so I've stuck with legs. Fluff wise, I'll write something up to explain why a chapter of bikers would still need/want a walker with them even though he couldn't likely keep up. I'm thinking an old captain who's centuries of experience are too worthwhile to let him join the Emperor. The chapter can use hi m at the rear and to function as a C&C node and maintain an overall image of the battle from the ground. Anyway just thoughts.
I've modelled all of my dreadnoughts to be taller than the squad stock versions and I'm not sure it comes across in any of the other photos I've posted. I've posted this one with a scout for scale just for such a reason.
So here's my Rifleman!