Sounds cool!
They might turn out cool indeed. First of all one needs to replace the highway mans tiny derringers with some real empire brace o' pistols.
The real challenge really is the fact that the highwayman blister contains one mounted mini and one on foot. So what I'm going to do is place the one on foot next to his horse rather than bending his legs into a twisted unnatural position.
However, in order to fit him next to the horsie, I shall have to place him and the horse on a 50x50mm base.
This, however isn't all that bad... The model will sort of become a Pistolier unit filler, and I will get 3 pistoliers from one Highwayman blister pack. (Building a 10 pistoliers will still be quite expensive tho')
The next issue will most likely be how to get them highwaymen into varied poses.
Also I'm not sure whether it's ok to use the 'unit filler' in the front rank or not...