You are right, the cockpit was skewed, to give the wepons operator a good viewfield and use at the maximum the Boeing's UTTAS proposal structure, And, out of completeness, a daring of the S-71 is here http://www.secretprojects.co.uk/forum/index.php?topic=655.msg5145#msg5145, just in case... If someone doesn't beat me at this, this night I'll post the CL-1700 and maybe the Boeing's front view
Nice pics. Sikorsky have done a website pretty close in concept to one I've been working on... But theirs is full of missing stuff and has a few typos... I hope they can get decent historians to sort the mess out.
I only know the mock-up in the first picture, but it seems to me that they were probably both related to the same program at different stages. The second one looks a little earlier and more crude to me, but still an advanced Army attack helo.