I too have the Fell/Moore Steampunk and I finally decided to treat myself to the Kingham/Matthews Steampunk and it should be arriving soon. A lot of decks that are on my wish list aren't out yet and so after much debate, I decided to throw it in my amazon cart.
The card titles changes concerned me a bit, which is why I debated buying it - that and the fact that I have two other Steampunk decks. But each one does have its own take on things and the art is different. And after looking at more scans of the cards, I feel as though the Kingham/Matthews Steampunk may read a bit more like an oracle deck or one that could be read intuitively so the titles changes may actually free up the imagination more.
I also have curly cue Steampunk. The art on this deck is so amazing and has so many layers. The cards are too large to shuffle but that is okay because I like putting out the cards and admiring them. So what I do it use the Fell/Moore Steampunk and then pull out the same card from the curly one and use them together.
Once the Kingham/Matthews Steampunk arrives I'll probably do some exercises with all three decks. As part of a contest by Barbara Moore, I created
The Victorian Clockworks Spread (6) and I may give that one a whirl.
I know that this may seem odd, but I think I may end up naming my Steampunk decks. I know that people name their cars, so why not their decks? I will have to think of some steampunky names...