Funny you should mention that clone. I just spent most of yesterday afternoon perambulating the Nyssa grove mentioned above to update the accession spreadsheet and note changes in health and quality - as well as additions since the last pre-COVID review.
'Northern Splendor' was just one of at least 8 new accessions since 2016. I am still reconciling my field notes with the database, so I don't want to jump the gun with any flighty statements just yet.
You will want cold tolerance, and that much I do know about 'Northern Splendor'. There could be others to consider.