I am back with some more information for those who are interested.
I've had contact with Harrods and they were extremely helpful

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However, they told me that the Dionysus butterfly edition only is available in medium size. Which is a bummer since small size is definitely my preference. I remember I once tried a medium and it was quite heavy and big.
The Harrods butterfly is the butterfly motif on top, which comes in 4 different colors.
I attached a few pictures for reference.
The clasps are all silver toned. One is all silver tone, three are with crystals.
For the trim, you can pick suede, python or even crocodile.
You can order a bag in person, pay in advance and they will ship it to you once it is ready. For suede trim it will take approx. 2 months before it's ready, exotics take a little bit longer.
Current price for the DIY medium butterfly edition with suede trim is GBP 3410,00.
It is
not possible to request a back pocket or a longer chain strap.
I hope this is helpful for those who are interested.
I must say I am a bit sad. I was sooooo looking forward to this butterfly edition and was already looking in my schedule how to plan a last minute to London.
I even somewhat decided on a daring combination with the emerald crystal buckle

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But alas, as much as I truly love this butterfly edition, I am really afraid medium size will be too big and heavy for me. Even though I am still a bit tempted because of the beautiful butterflies.
Sigh....if they would do this in small, I would have ordered one for sure. They do have the DIY sequin dragonfly Dionysus in small (see picture), but that's not really my cup of tea.
Anyway, for those who are going to order one, have fun and please share your reveal once it arrives

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