The fact the All Blacks won't be at full strength also adds to the feeling that this is not as much an examination as it is preparation.
"It's about putting some detail in our team, making sure we know what we're trying to do. In a shorter week you don't get as much time to test it under massive pressure but that will come Friday," Foster said. "It's a chance to give some a hit out and to build some combinations."
Foster ran the rule over the Savea brothers Julian and Ardie, two Wellingtonians of Samoan heritage.
Foster praised the younger brother's new-found adaptability, while noting that Julian has made dramatic improvements in some areas but has yet to find his running spark.
"The amount of time Ardie's had at No8 has been a real positive for him," Foster said, acknowledging the dynamic back-rower would probably prefer the No7 jersey.
"The fact he's now playing eight and growing in confidence there is another string to his bow. It's important for us going forward, his versatility, but he's been simply outstanding in either of those jerseys and offers us some really good choices. We'd still like to see a little bit more from [Julian] with the ball. He's improved dramatically in the areas he's been criticised for in the past - his defence is improving, his fitness, he's looking sharp and hungry - and the next piece of jigsaw is ball in hand and beating people.
"He's got the ability, we know that, he's got everything there so that's the next hurdle for [him]."
Ardie Savea was happy to play in whatever jersey they put on him but he would say that, wouldn't he? Julian said it wasn't really for him to judge his form, but it was a privilege to be here but he would say that, wouldn't he?
And yes, they couldn't avoid the big red subject totally. Said Foster: "It's about accumulating information ... We've got open eyes at the moment, getting our heads up and seeing what we can learn."