I do love the contrast between Garland and Valorion/Jakkon Greyjoy. Garland's armor would be almost like what you saw in Loras's in S1, it's incredibly ornate, beautiful looking and silvery clean, it's very protective to say the least as a result of the amount that has been spent on it. Garland is no Knight of the Flowers, but in armor, you'd kinda see this extension of Tyrell-ness in the way it looks. Wheras the Greyjoys are basically completely brutalist in comparison and look fucking savage as hell, and even their fighting styles would be completely different, no doubt it would be a hell of a fight to watch if Garland ever met one of those two. I would doubt he'd have a good chance in a fight like that, mind.