It can be done with some of the bead versions. But it is a PAIN. And some can't be done this way because they are too large to go through the opening. Adding a bag at install is, by far, the easiest way to go regardless of which version you pick.
I do not have a huge, comprehensive experience with balance beads. However, having done a good deal of research, digging through the hype and sales pitch information. I found you can get beads in Ceramic, Steel, and Glass. There are pluses and minuses with pretty much all versions. As is usually the case with most products. Which means you prioritize your wants/needs and go with the product that fits them best. Though I don't recommend putting price at the top of any list.
I settled on this product.
https://www.magnumbalance.com/en-us/products/
I know there are many who are happy with other versions and this recommendation is not to detract from that. We have started putting these into our tire installs, both Spyders/Rykers, autos, and large truck tires. With good results.
What I like about the Magnum+
They are larger balls which do not get stuck in the valve stem.
My feeling is that the smaller balls were developed to make it possible to install with the tire mounted. But I think this feature comes at the expense of other attributes. Certainly, customers are not likely to have their tire dismounted to install beads. But since we have a tire machine, it is not a big deal for us to do so. And I think the advantages of the larger balls is a valuable plus.
(The following are from independent testing. Not personal experience)
They are Glass and do not disintegrate as easily or quickly as ceramic.
They don't build up static charge which can negatively affect the balancing process.
They are less abrasive to the tire. (None of the bead versions damage the tire, even if they are more abrasive. But the debris created tends to coat the beads making them less desirable for reuse).
The Spyder/Ryker take 3oz of this product. You can get it in bulk or 3oz packets. The packets can be thrown into the tire when mounting making it a very clean and easy process. (this is also true for all the other bead products I researched)