How will Scotland cope with the streetwise Irish?
This weekend it's the trip to Dublin. And I reckon the Irish are the most streetwise team in the Six Nations.
Things to look forward to? Well, having just watched the Irish play France, among the treats in store is a back division that'll be in Scotland's back division before the lineout is over, a bunch of players who will target the ball in the tackle, an Irish captain who likes engaging the referee in wit and repartee, and two pints of beer for just under £100.
Let's start with the tackle or, as it's known, the Irish choke tackle.
Now, there are lots of different defensive systems in the world, but the Irish have slowly stolen a technique from the world of sevens rugby, where most countries now use it: hold a man up long enough, keep the ball off the ground, and the defending Irish get the ball as the attacker can't offload and can't present the ball on the ground.
Ireland's Stephen Ferris tackles Imanol Harinordoquy of France during Sunday's RBS Six Nations match in Paris. Photo: Getty
Basically, the ball is targeted in the tackle and the man in possession is held up on his feet for as long as possible.
All that I like, as it's very clever. It's not pretty but it means that if the maul they have created falls down, there are plenty of Irishmen in the way, should the attacking team try to turn it into a ruck.
And why roll away or release the ball if that would make it easier for the attacker? In fact, there is a real effort to get under the ball as it heads to the ground.
Anyway, it means that more and more of Ireland's opponents have to deal with slow ball and bodies in green jerseys between them and the ball.
How Scotland cope with all this is a challenge.
I suspect they might take a leaf out of John Barclay's book as when he goes into contact he does so at such a low height as to render that form of defence impotent.
My guess is that the Scots will try to drive into contact as low as they can and go as far as they can. And have a quiet wee word with the ref too.
The second element Scotland will have to contend with is the rapidly advancing defensive line.
It's organised, at least organised enough for Tommy Bowe to grab an interception, and when the French tried to play deep, as they did in the first half, Ireland picked them off out wide.
Just looking at some of the French lineouts, I do have a suspicion that the Irish back division is flying up before the lineout is over - which should be when it leaves the mark it was at if there's a maul or when the ball leaves the lineout.
Anyway, as yet I don't know the Scotland selection but I think Jon Welsh is ready for a call-up to give the scrum - which, let's be honest, has creaked - an air of solidity.
My guess is it'll be a hard day for Scotland: the Irish are, should we say, streetwise and that gives them an advantage.
That is tough, because Scotland need a win. How do you think it will go?