That does make good sense to have a Plus around. However, to use the Plus in that way, you must keep swapping the ROMs back into it which is a little dangerous. I always manage to bend the pins at least a tiny bit each time. Considering shipping, it may cost about the same, maybe just a bit less, to buy the burner ($30 shipped) and 2 ROMs ($10 shipped maybe?). So we're talking $40 and you get to keep the nice burner for other crazy projects.

The best solution is to do both I guess, so you have a handy Plus with its 800k and SCSI port and your 128ke. You could even dump the real Plus ROMs and burn exact copies without all the splitting business.

It is also possible to send blank chips to one of us and have us do the burning for you.