I do not know the House Greyjoy but I am pretty sure they will not select this dram for their favourite drink, if they have alternative options. I do have, and that is why I will never buy such cheesy marketing stuff.
The colour is jonquiripe corn and the nose is exactly that immature and (herbal) wood-driven only as expected. It is punchy and truly boring to sniff - by the way: It smells like a cheap version of the 08-years old special release (WB id 116922).
The taste is bitter-herbal with very little sweet or otherwise pleasant flavours. I call this mono-spiked and I do not like it (I am not a herbalist). Water releases waxy notes in the nose and turns the taste more approachable but still it stays an one-dimensional affair.
The dram arrives peppery-hot on the palate without any significant coating effect but a drying-astringent feeling (the tannins of the virgin or heavily de-charred casks take their toll). The finish is of medium length and adds nothing but the bitter-astringent moments of the tannins.