If other Garrison's want to make ther own Cav units I don't have a problem with it. However I do believe that the regimental number 69 should stay in the SO and other Garrison's use other numbers.
TD6873 the 69th dewback Cav leader should however have a say on what he thinks.
The 69th Dewback Cav required members to have the unique Dewback pauldron and a Dewback prod as well.
So keep that in mine if you decide to make you own units.