SIN-DEL-FCO booked via the website on AI, then AMS-VIE-BKK-PER booked via screenshot method on OS and TG for Easter time. 9.5h layover in BKK. Screenshot method worked almost perfectly; sent a polite email listing flights and passenger details with screenshots, they emailed me an itinerary overnight then called me the following night at 9:30pm Perth time for payment over the phone with a lovely and well spoken gentleman names Alessandro from a Florida number. Tickets emailed to me within the hour.
The only slightly unexpected hitch was that using the points + pay method ended up costing me more than I expected because I was charged the full US$30 per 1000points for the points i bought instead of the reduced price given by the slider bar on the website I used on a dummy booking to estimate ($22). I didn't question it because I thought the agent was telling me the total price inc taxes etc which sounded about right, but it turned out the taxes were on top of the amount he had said when I got my email receipt. Whether that was correct or not I'm not too upset about it since I got the Europe-Aus tickets I was after without having to waste a positioning flight ex-asia through Krisflyer like I usually do.