The only problem is the lack of army lists for forces out side Britain. I am rather interested in Clovis and that period
The rules contain all the unit types so just write your own list for Clovis' forces. The points are pretty balanced and there aren't really any super units, so allow the Franks to take more cavalry or whatever that suits your idea of their composition. As long as you take the same points on each side you'll be fine. Or the existing lists are flexible enough to allow you to field something approaching your idea of a Frankish force.
They're a fun set of rules that I've not played for s long while but always enjoyed when I did. Some people don't like how skirmishers are modelled in the rules, but Dan has explained his thinking. They're hard to use but are probably a pretty accurate reflection of their usefulness in the period.
It's also always better as the rules are written to spend your LPs on defence rather than attack. So some sort of rule to limit the amount you can spend (I think we generally went with two, but sometimes just allowed only a single one in our games) makes for a better game.
Generally the games we played went Advance. Ineffective Missile Fire. Clash of Battle Lines. Grind. Grind. Grind. Someone Breaks. General Collapse.
So a pretty accurate depiction of Dark Age warfare in my view.