I don't think there is one answer to your question. It may or may not produce a good stand depending on a lot of things - soil type, soil moisture, soil compaction/traffic, etc.

Trying to get a clover stand in grass that's "been there forever" (as has mine) also is complicated by the fact there is a lot of thatch under the sward and above the soil. The seed needs to be in contact with and covered by SOIL.

As I said below, the stand you see in the pictures is my third try at getting a clover stand in this sod pasture without tearing it up. I was getting tired of experimenting with it. Actually thought it had failed again until about the middle of July. I was so happy to finally see some clover I actually stood there taking pictures of cattle grazing! Not usually photo-worthy news!

Running a cultipacker over it would certainly help compared to just letting it lay there or counting on frost seeding, but there may or may not be soil actually covering the seed.

It's a matter of percentages too. What percent stand do you want? if you are content to have 20% of your seed actually develop into a clover plant then it may "work". If you want or need 70% of your seed to actually develop then you need a drill and to plant it right.

If you have a 750 drill why not look into getting the small seed box attachment? Someone may have one used they are not using.  Or just rent a drill from the NRCS or a local dealer? Or just spread it and cultipack it and see what happens, it may work well enough for your needs. Good luck.

Jim at Dawn