What should we expect when we turn on paid + organic channels for Multi-touch Attribution in GA4?

[LakewoodSEO]

Currently most of our clients start out in paid and eventually come over to our department for organic SEO. When the GA4 accounts get set up the multi-touch attribution is using the data driven modeling (which is great) but for the paid channel only. We want to turn it on for paid+organic to see how both interact together. What can we expect when we make this switch (paid assumes they will see a drop in conversions attributed to them and organic will see a rise). And what should we prep to say to clients to they do not think that SEO is tanking their paid performance?