Hard to figure the likelihood of the chain coming apart. After I had completed the replacement of two timing chains on my 78 & 81 300D's I returned that tool to the shop that leant it out. While in there a self described independent MB mechanic wandered in and asked what that was? Told him. He said he had never seen one and he had used the clips on the links with his jobs for years.
The shop manager just about fell over. Could not believe the guy had not wrecked a long series of engines. The Indy said no, all was doing well.
I guess He does watch over the fools and Dingbats!