It's as though he had never stopped playing Travis. Blake was a disappointment in one way. He too, was exactly right, but this is the Blake we see in the last episode, the man who has acquired an extra layer of cynicism, who says that he used to be more trusting than he is now. I can get if the cards are down. Voices are very evocative.
Actors change physically, but voices tend to stay the same.
Listening to this tape, I don't see Gareth Thomas, I see Blake. The speech patterns are Blake's. As I said, this a very professional production all round. In fact, there's only one thing that gives it away as a fan production. Having listened to it once, I haven't spotted a single continuity error and if you realise that these stories fit between other episodes and refer to events going on in the world at large, then you'll soon realise that anyone who wasn't totally immersed in the series would never have got it all right.