How performant is Cribl Search when reading frozen Splunk buckets from S3?

I see it's possible for Cribl Search to read frozen Splunk buckets from S3 per this article below. Has anyone used it for reading Splunk frozen buckets, how fast are searches on multi-GB frozen buckets?

Thanks

https://community.cribl.io/kb/articles/30-search-splunk-backups-in-place-with-cribl-search?utm_source=community-search&utm_medium=organic-search&utm_term=splunk+frozen