Validate same object with a different validator

[AlexHolmes4]

I have a form that has 5 pages and I use the same object shared across.
DI obviously cant figure out which validator to provide back as its the same object for each.

That leaves me with
Where you manually assign the validator to use.

The issue I faced here is now the validation is completed in a manner than always expects the ModelContext provided, but using some component libraries inputs breaks it and I can only assume its due to #204.

(Telerik Editor component, on Format dropdown change throws exception that FluentValidator expected Object of type X but received DisplayObject32).

My options are;
Create DTO for each page and split my object up, rebuild on save/submit.
Workaround I came up with;

workaround:

public sealed class MarketingDetailsForm3WrapperValidator
: AbstractValidator<object>
{
    public MarketingDetailsForm3WrapperValidator()
    {
        When(x => x.GetType() == typeof(ComponentMarketing), () =>
        {
            RuleFor(x => x as ComponentMarketing).SetValidator(new MarketingDetailsForm3Validator());
        });
    }
}

public sealed class MarketingDetailsForm3Validator
    : AbstractValidator<ComponentMarketing>
{
    public MarketingDetailsForm3Validator()
    {
        RuleFor(inputObject => inputObject.ComponentMarketingNotableAcademics)
            .Must(list => list.Count <= 3)
            .WithMessage("no more than 3 items can be provided");

        RuleFor(inputObject => inputObject.ComponentMarketingNotableRankings)
            .NotEmpty()
            .Must(list => list.Count <= 6)
            .WithMessage("no more than 6 items can be provided");
    }
}

Anyone see any big flaws with this approach? cheers