He plies his trade in the PRO12 but is rated behind Dan Biggar in a land where good No 10s tend to be revered. He has, however, leapfrogged the likes of James Hook and possibly Rhys Priestland, who won plaudits for his RWC 2011 play.
"They are well aware that my preference is at No 10, but any opportunity to start in test rugby is always hugely exciting. It's about doing what's best for the team. That means we can play two decision-makers and distributors on Friday night. This is a young Wales side but the potential is there."
Anscombe will cop the underdog tag against Tonga, if he has to, though competitive men such as Jamie Roberts, Scott Williams and Alex Cuthbert might bristle that a side that has never beaten Wales will go in as favourites.
"Potentially we are slight underdogs, with all the changes we've had. But they are a big, ball-running team and, dependent on conditions, we know they look to use the ball and offload. I'm sure it'll be a fast-paced game. We need to limit the opportunities we give them in open space," he says.
His future for the next two years is sorted having signed a two-year dual contract with the WRU and Cardiff Blues. His father Mark Anscombe, the Canada coach and the man who first picked him for Auckland, would have been pleased. The two are in regular contact.
Anscombe junior has a word of warning for New Zealand fans who think the Lions, coached by the man who first picked him for Wales, are heading for a heavy test series blackwash.
"They might be on a hiding to nothing with their schedule, so you feel for them. It will take a while to get the combinations, but I can guarantee they'll be a better side when they face the All Blacks and it might be a lot closer than everyone thinks. At the end of the day, they only need to win two games to have a successful tour."
He was understandably quick to defend his Cardiff Blues colleague, Lions captain Sam Warburton.
"Sam's a top man. He always puts the team first. He's proven himself before in big games and he comes alive in big games, like in the Six Nations. If he can stay injury-free, because he tends to carry a few dings, he will add to the Lions in the test series."