I plant wheat into existing clover every fall. I set the disk gang to disturb about half the soil - the disk blades go maybe an inch deep. It seems to invigorate the clover, also. If it is pretty much a pure clover stand, I dont do anything after planting. If it is pretty weedy, I will bush hog after planting.
A number of times I have planted Tecomate LabLab plus. That mix contains Lablab which is a huge seed, down to milo which is bb sized and that all feeds well together. If I was wanting to add really small seed to that mix, I would run the small seeds through the second seed box so they were not planted so deep. I plant wheat and clover as a mix every year - and run them through separate seed boxes so they are planted at different depths at the same time.
The disk gang can be set as aggressive as you want. I have hogs - a lot of hogs. A no till drill is pretty much useless in areas where hogs have been. The woods seeder will smooth the food plot and plant into that uneven ground where the coulters on a no till wouldnt even touch the ground.
Would I use a no till - yes. Would I get rid of my Woods if I had a no till - definitely not. The woods seeder also works great at trail repair, erosion repair, hog root - things a no till cant even begin to do.