I like this quote...

My view is that some conventional building methods sometimes require less input from the designer. In turn sometimes decisions are made by either supplier or builder on site, and while this input is valuable, arguably most of connection details should happen at the time of designing and therefor at the stage of drafting, where cost are in control and when 'testing' is allowed, if not encouraged.

I believe end-client benefits from this process greatly and as designers/architects we should promote this service and encourage clients to allow for this process to happen at early stage.

Different SIP suppliers have different requirements, I know Formance undertakes the full panelisation stage and while some major decisions have to be done by the designer early-on, most of the panelisation happens efficiently by the supplier. But its critical for designer to have the time to make correct connection decisions that often reflect on end panelisation.

It depends on what you usually design with. If only designing in SIPs, then connections and details are easier as more predictable -there are standard screw fixings, or standard nail fixings. All else are SED. Panelisation (where a driver) becomes automatic.

Yes it does take more time. The designer needs to think about dimensioning and setout to suit the panels. Also detailing and specifying fixings need to be carefully considered.