Oh, the Hellions are a blast. The force builds are obviously different from a Falcon force (duh), but there's a certain similarity as well- the Falcons tend to lean into mobile warfare more than most, with faster units like the Summoner, Hellbringer, Black Lanner, etc. being prevalent over slower stuff- they use that as well, of course (Turkina, Night Gyr, Warhawk), but in comparison to, say, a Smoke Jaguar force on average, the Falcons lean towards movement and flexibility as a primary focus.
And of course the Hellions lean into it as a must- no other factor is as important to the Hellions as moving fast. That CAN make life difficult- as you can imagine, you're not exactly going to show up with a Dire Wolf and have a good day. But if you know how to make a mobile force work for you, they're a lot of fun. Hellion play requires a lot of patience, looking for the right moment to make your attacks and knowing when to back off (ironic, given their temperament!), but it does pay off if you work for it. Their homemade Omni, the Hellion, is one of the best light Mechs in Battletech, so basing a force build around those is always a winner.
It means that any Hellions that ended up as bondsmen to the Falcons probably adapted very quickly to their new surroundings- the tactics didn't need to change a great deal, just the color of the uniform.