Managed to get a further test of the Saim-Hann list, this time testing 4 Scout Rider formations.
The video report is
here.
Main points from the game is that the list with 4 Scout formations and 1 Hornet formation does lack long range shooting which during the first turn and when trying to finish off/break formations is a problem.
Also if you bunch and are hit by a Strike Cruiser's barrage you are going to in trouble from the start.
That the game only finished 2-0 to the Marines is also something to be considered. However I did make a better than average number of Invulnerable Saves (didn't count but had the feel at the end of the game) which kept the Eldar in the game along with rally rolls.
Feeling at the end of the game was that this was not an overpowered version of the list and for my next game I'll go with larger main formations which have a greater chance of surviving.
One question that was raised was do Vipers in a Scout Rider formation gain the scout ability? We said not as there was not a special entry for them in the list where there is one for the Scout Riders.