[ray_mcavoy]

Yeah, as long as your crimping tool(s) are capable of handling open barrel terminals that are the same size as the splice clips, you can use the same tool.

I've heard the same thing regarding the pros & cons of soldering automotive electrical connections. In most cases, I usually solder connections like this just for the added security it provides. But go easy on the solder, don't apply an excessive amount that will wick up into the stranded wire away from the splice, making it brittle. And try to locate the splice in a portion of the harness that will be well supported by whatever clips / clamps you use to secure the harness in place so it won't be subject to excessive movement.