erik,
You wouldn't happen to be on that LNG project down there south of Lima would you?
I've seen the connection your talking about in number 2, but for information there is not much to add. If your doing it to D1.1 you have the relevant information, and assuming again that your drawings call for D1.1, then I would suggest trying not to re-invent the wheel and go with the details per engineering specs.
If your trying to design, and trying to figure out which is best, There are pluses and minuses to both. However; the one detailed in D1.1 is tried and true, so it might be a good idea to stick to conventional wisdom on that one.
Regards,
Gerald