KappaI too ordered it and am still waiting for the knife.
What i understand is that it is not a prohibited, nor license-applicable knife to poses in Singapore because of the blade length(<6cm) [correct me if I am wrong]. However, customs can still inquire on the purchase and if they deem necessary, call you down to cantonment to verify your purchase and intent. I ordered a sydercro nishijin cricket last year from Amazon and it got in w/o any issues.
On the shipment - I would have actually preferred to pay for tracking because waiting for this shipment, especially in Singapore, is a pain ( no information given on an un-track-able shipment before purchase confirmation!). And we still paid for shipping.
Massdrop could have offered track-able shipment option during checkout.