A friend using Steermatic on CNG from last 2 years . HE was also worried but now its over 2 years plus on our last visit to Honda they told us the transmission replacement will cost over 80k and in Pindi 2nd hand market we saw brand new looking steermatic gear for 14000Rs lol the pathan was saying he can further reduce it if we want it.
So yes it can work on CNG but the performance is like a torture. He needs to shift to petrol to properly reverse the car as on CNG it will just not move and some time you can hear the transmission scream but its still working. I guess due to his use of petrol and cng togather smartly and maintainance.