To update after my flight with Silk Air. Going from SIN to MDC. After the baggage scan going into the gate, the Silk Air lady, asked to weigh my luggage. I about had a heart attack, as my carry on was about 40-45 pounds. It was a couple of housings/with cameras in them. With ULCS arms and clamps for both and tripod and legs, charges, focus light, etc........All stuffed in the Akona camera bag.
The poor lady tried to pick it up and couldn't. 
After talking to the manager there at the gate, and opening it up and showing him what it was. He agreed to let me carry it on, but I had to lift it into the overhead bin. No problem...I sure wasn't going to let one of the flight attendants lift it up there for me.
Coming back home, there wasn't any issue. In fact, they didn't even charge me for the extra weight for my checked baggage. Which was about 60 pounds overweight, even after silk airs extra 10 kg rule for SIN to MDC allowance.
Dustin