Attachment of “io” in between two consonants

Today I read for the first time the word violent written in French DJS. I was surprised to see that the i circle was written on the back on the v curve instead of inside. I was wondering :

1/why? I have tried writing the i inside the v and then adding the o under it, and to my (untrained) eye it looked clear and flowing. If the only advantage of writing the i outside is to have it perfectly lined up vertically with the o, then I don’t really see the point…

2/whether this is something typical of DJS, or whether all Gregg series have always written this combination like that.

Thanks.

EDIT: adding an image


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