Hello Devil and Edlin, it's nice to meet you both.
The perks that Devil cited (special kernel, dedicated support for Sid packages, and special management scripts) sound like good reasons to choose Siduction over vanilla Sid. And I've been using GNU/Linux for over a year now, so while I'm not quite "weathered", I'm also not a complete noob. Either way, I'm very willing to learn new things.
Daily upgrades are not a problem for me; I'm currently using Artix (Arch without systemd) as my main system, and I upgrade packages every day. The terminal is also a non-issue; in fact it's my preferred method for package upgrades on every GNU/Linux OS I've used (except Linux Mint which has an awesome software updater GUI). And I've learned a handful of other commands that I regularly use to manage my system. Also, I like Debian, so it looks like I meet all of your requirements.
From my end, I want a distro with: An enormous official repository (including runit and elogind packages), the newest software, and adequate support (including security patches and bug fixes) from a team of developers and/or the community, and it appears that Siduction may have all of that, so this might work out.
I just have a few more questions to ask before I make a decision:
What special scripts are provided to "ease the handling"?
Do the Siduction developers provide bug fixes and security patches that users otherwise would not receive as soon or at all with vanilla Debian Sid?
Which breaks more often, Siduction or Arch?