A quick Saturday evening conversion, I present to you Brother-Apothecary Arvun:
I really like these MkIII "Iron" armours. And it gave me an idea; while I can't go full Heresy Era with my Griffons (not being a founding legion and all), I might decide to go "historical" with them; Modelling them not to represent a M41 army, but rather an M34-M37 or so army. So with a few more ancient armours still seeing regular use, rather than being hid away in the armoury as relics of a bygone age. It also gives me an excuse to use every single bit of MkVI kit I come across, as those would also see much more heavy use in that era, and they are my favorite armour mark.
I'm kind of liking the idea, but need to mill it over a bit more. It would mean playing and building my Griffons without the weight of the Badab War and the feud with Periclitor behind them. And while the feud with Periclitor isn't my favorite piece of Howling Griffons backstory, I do love the Badab War dearly...
Another thing to consider, should the Time of Ending that 40K is currently entering turn out to be as big a clusterfuck as the Warhammer Fantasy End Times were, I have another excuse to completely ignore it!
I'm loath to give up the Badab War though, I may just keep my army M41 and use the older marks to really show off the age and pedigree of my Griffons. Luckily I can ponder this at my leisure, as I have absolutely no deadline for this army. :D