Skore does not support swimlanes because we believe that
Swimlanes are not easy to read. Skore approach makes processes flow in a rather linear way which is more convenient. Swimlanes diagrams often have lines flowing in all direction
Swimlanes are not good with roles. Skore approach makes it easy to add as many roles as necessary. Having one swimlane per role forces to select a few roles because of the page real estate available. How many swimlanes with a line "Others..." have you seen?
Swimlanes are not good when several roles are involved in one activity. Skore approach supports adding as may roles as relevant to an activity
Swimlanes are not good with RACI / RATSI. It will have to be done in a third party tool; which will quickly be out of sync with the diagram. Skore supports RACI, RATSI, RAPID or any responsibility matrix you want to create
What are swimlanes good at ?
Swimlanes are good at showing handover between roles. Skore has a built in feature which does that