That I don't understand. If you add the drawsvg node in your flow, then you should have a local drawsvg service running. And in the SVG node, you need to point to the local url instead of the cloud url (as you can see in the drawing on my readme page). You should use both nodes in the same flow...
You mean the download takes long, or loading the drawsvg editor in the svg node? For me here that works as fast as the cloud version.
Ah ok, you want to use other UI nodes on top of the SVG UI node... No that is not possible as far as I know. The only thing you can do is use foreign elements inside your SVG. Which means you use HTML elements (that are no SVG elements) in your SVG. You can see an example here, where I use an html input element to enter the required temperature. And here is another example where I display/edit an html table inside an SVG.
